GIẢI CHI TIẾT ĐỀ THI THỬ môn sinh HUẾ- LẦN 1 - CÓ ĐÍNH CHÍNH

Trang 1/14 - 127  KHỐI CHUYÊN TRUNG HỌC PHỔ THÔNG (Đề thi có 08 trang) ĐÁP ÁN CHI TIẾT   Mã đề thi 127 Giải chi tiết đề thi: 1/ Cô: Phạm Thị Phương Anh (ĐHSP Huế - Huế) https://www.facebook.com/fear.xu 2/ Thầy: Đinh Văn Tiên (THPT Gia Định – Bình Thạnh) https://www.facebook.com/tiensinhgd Câu 1:   DE de  không  A.    B.     ) C.  ( D.    Câu 2:    Trang 2/14 - 127 (1)   pôlipeptit khác nhau) òa sai vì 3 gen có chung 1  (3)   ong 1 operon nên luôn  (4)    mARN riê   A. 3. B. 4. C. 2. D. 5. Câu 3:     A. 7. B. 3. C. 11. D. 9. HƯỚNG DẪN GIẢI: 9/16 A-B-D- h 2 TH: + TH1: 9/16 A-B- x 1D-  + TH2: 3/4 A-B- x 3/4D- -x1B- -x3/4B- () - có 3 TH là BBxBB or BBxBb or BBxbb. -  x 2 = 6 phép lai.  Câu 4:   A.   (  B.    C.  trên cao. () D.    Câu 5:      1      A. AB Dd ab . B. Ad Bb aD . C. Ab Dd aB . D. AD Bb ad . Trang 3/14 - 127 HƯỚNG DẪN GIẢI: -D---  - -D-ành aB/a-D- -B- nên F 1  - -- -bb (2)  1 aD  B. Câu 6: Tro thì  A.  B.  C.   D.  Câu 7: -B--bb: màu tím; aaB-                  F 1  1 ? A.  B.  C.  D. Có  HƯỚNG DẪN GIẢI:  Aabbdd (*) AabbDD (*) AabbDd  AAbbDD AAbbDd (*)  .1/4.1/4. = 1/32  1 3/4.1/4.1-  = 1/32 x 64/11 = 2/11. Câu 8:  A.     . (sai vì           B.      C.     D.    Câu 9:   2  Trang 4/14 - 127  .         A. 3. B. 4. C. 5. D. 6. Câu 10:   A.  cho phôi. (sa B.  .  C.   .  D.  Câu 11:   hoàn toàn  A.  B.  C.  D.   Câu 12:            1  1  2  au:     cái có   2 cái  A. 1/1296. B. 1/2592. C. 1/648. D. 1/324. HƯỚNG DẪN GIẢI: Trang 5/14 - 127  (AaBbxAaBb)  D X d x X D Y) - -B-X d Y) x các chu -B- X D X D : 1/2A-B- X D X d ). -B-) x 4/9(AaBb/A-B-)x1/4 (X d ) x1/2(X d ). Câu 13:    A.  B.  C.  D.            Câu 14:    A.  - VC) B.  - VC) C.    D.   Câu 15:    sát quá trình phân      (1 (2)                                 A. 2. B. 4. C. 3. D. 1. HƯỚNG DẪN GIẢI: 4.2 n-1 = 64 nên n = 5, 2n = 10.    m phân 2.  (1) Sai  (2) -1). (3) Sai    (4) Sai  (5) Sai  Trang 6/14 - 127 Câu 16:   1   1   A. 3/16. B. 3/8. C. 1/2. D. 1/16. HƯỚNG DẪN GIẢI:  m Y M x X M X m F 1 X m X m , X M X m , X M Y M , X m Y M Lai: X M X m x ( X M Y M , X M Y m )  M = 1/2 X m =  M = 1/4 X m = 1/4 Y M = 1/2) Nhân vào 1/4 + 1/2.1/4=3/8 Câu 17:    1  1   1 là bao nhiêu? A. 9%. B. 16%. C. 17%. D. 41%. HƯỚNG DẪN GIẢI: A-B--bb, aaB-   Ta có: hoa traéng 0,41 aabb x  =   x = 9% [59%A-B- (50%)]        ab/ab = 9% = 30% x 30% nên Ab = aB = 20%. Ab = aB/aB= 20% x 20% = 4%, aabb = 9%.  + 9% = 17%. Câu 18:  thân  không  A.  B.  C.  1 là 50%. D.  1  2 là 81/256. HƯỚNG DẪN GIẢI:     -  B.  C.  D.           2 = 81/256. Câu 19: Mt nhà nghiên cu tin hành th phn gia ht phn ca mt loài thc vt A (2n = 14) vi noãn ca mt loài thc vc hp tt thí nghim tin hành ghép mt cành ghép ca loài A lên gc ca loài B thì nhà nghiên cu bt ng   Enzim A Enzim B Trang 7/14 - 127 phát hin thy ti vùng tip giáp gia cành ghép và gc ghép phát sinh ra mt chi mi có kích c ln bng. Chc cho ra r ng thì phát trin thành mt cây C. Khi làm tiêu bn và quan sát t ng ca cây C thy có 14 cng có hình thái khác nhau. T các thí nghim trên, mt s nh (1) Thí nghim ca nhà nghiên c cách li sau hp t. (2) Cây C là mt loài mi. (3) Cây C là kt qu ca s i hóa. (4) Cây C mang  c tính ca hai loài A và B. (5) Cây C không th c nhân ging bu tính. S nhn xét chính xác là: A. 1. B. 3. C. 4. D. 2. HƯỚNG DẪN GIẢI:  (1)   thích nghi.     Câu 20:   1    cây P lai phân  A. 10%. B. 25%. C. 15%. D. 5%. HƯỚNG DẪN GIẢI: -  : Tròn : Dài = 9: 6: 1 AaBbxAaBb -  : Chua = 3:1 Dd x Dd  = 0.25 x 0.01  . Mà aadd = 0.01=> ad = 0.1 => gt HVG => Kg P: Ad Bb aD  P lai phân tíc Ad Bb aD x ad bb ad cây trò-bbD- và aaB-D-)=0.1x0.5+0.4x0.5=0.25=25% Câu 21: sau cùng và   mà không : A.  khác. B.  C.   D.  Câu 22:  0,1 aa =   Trang 8/14 - 127    1 là: A. 1/28. B. 1/25. C. 1/32. D. 1/36. HƯỚNG DẪN GIẢI:    0,6 2 0,6 2 0,4 1 x xx =  = 0,25   2 22 0.25 0.5 1 0.75 .1 2 0.75 0.25 0.75 0.25 0.5 28 x x x x x   Câu 23: không  A.   B.   C.  D.   Câu 24: không  A.   B. lôcut gen ài.  alen    C.   ) D.    Câu 25:   1  1   a . Cho các cây F a  2    2 mà khi cho các cây này  A. 6/2401. B. 32/81. C. 24/2401. D. 8/81. HƯỚNG DẪN GIẢI:   >  P: AA x aa F 1 : Aa  1  Aa x aa Fa: 1/2Aa : 1/2aa  (½Aa : 1/2aa) x (½Aa : 1/2aa) F 2 :1/16 AA,6/16 Aa,9/16 aa : AA= 1/7; Aa=6/7  2   (6,25%).  6.25% =1/4 x 1/4   1 cây Aa và 3 cây AA = (1/7) 3 x (6/7) x 4C2= 24/2401 Câu 26:     và ? Trang 9/14 - 127 A. 144. B. 1320. C. 1020. D. 276. HƯỚNG DẪN GIẢI: LƯU Ý: Vẫn xét YO vì đột biến này không ảnh hưởng đến sức sống - :  có 2 alen trên 1 NST có     Câu 27: ,                  1 .  1  1 . Khi cho hai cây F 1 giao không thể   A. 11     : 1     . B. 35     : 1     . C. 5     : 1     . D. 3     : 1     . HƯỚNG DẪN GIẢI:  TH 1  TH 2  TH 2   Câu 28:      (1)  (2)  (3)  (4)   A. 0. B. 1. C. 2. D. 3. HƯỚNG DẪN GIẢI: Gen ngoài nhân        Câu 29:     A. 12. B. 6. C. 5. D. 24. HƯỚNG DẪN GIẢI:  11 22 x  (A-B-D-) Aa x aa Bb x bb DD x DD (1/2) (1/2) DD x Dd Dd x DD Trang 10/14 - 127 DD x dd (100% D-)  Câu 30:  A.            nhau.   B. .   C.  (  ) D.    Câu 31: phân tích hóa sinh   A.  B. -3. C.  D.   Câu 32: :                   ADN      .(ARN- ADN). (4)   .   A. 2. B. 3. C. 1. D. 4. Câu 33: không  A.  c (GP không làm  B.     C.  D.   Câu 34: thái? A.    B.   cao) C.   D.  [...]... 1/ 3a) x (1/ 2A : 1/ 2a) = 2/6AA : 3/6Aa : 1/ 3aa = 2/5AA : 3/5Aa III (10 ) x III (11 ) = (7 /10 A : 3 /10 a) x (2/3A : 1/ 3a) Di hụùp 13 30 = x khoõng beọnh 30 27 Xột bnh húi: III (10 ) x III (11 ) = (2/3H : 1/ 3h) x (2/3H : 1/ 3h) 2/9HH : 5/9Hh : 2/9hh = 5/7Hh : 2/7hh KQ = 13 /27.5/7 = 34,39% MN CHC CC EM U I HC VI KT QU CAO NHT! Trang 14 /14 - Mó thi 12 7 ... c X MXm vi ti lờ 9 /11 XMXM : 2 /11 XMXm Xỏc xut sinh con gỏi khụng mang alen gõy bnh P l 1/ 2 x 10 /11 = 5 /11 Xỏc sut bi toỏn l 5 /11 x 4/49 = 20/539 ap an B Cõu 44: Trong cỏc c ch di truyn cp phõn t, c im no sau õy cú c enzim ARN pụlimeraza v enzim ADN pụlimeraza? (1) Cú kh nng thỏo xon phõn t ADN (ch ARN pol trong phiờn mó) (2) Cú kh nng tng hp mch pụlinuclờụtit mi theo chiu 5 3 m khụng cn... v trong nhng ln nguyờn phõn khỏc, thoi vụ sc vn hỡnh thnh bỡnh thng Sau khi kt thỳc 6 ln nguyờn phõn ú, t l t bo b t bin trong tng s t bo c to ra l bao nhiờu? Trang 11 /14 - Mó thi 12 7 A 1/ 12 B 1/ 7 C 1/ 39 D 3/20 HNG DN GII: Do ụ t biờ n chi xay ra trong lõ n nguyờn phõn th 4 nờn 3 lõ n nguyờn phõn õ u tiờn diờn ra bỡnh thng 5 TB sau 3 lõ n nguyờn phõn ta o ra 5 x 23 = 40 TB binh thng + ln nguyờn... (10 0%) Th2: 1 t bo to giao t ABX De , 1 t bo to giao t khỏc (50%) Th3: c 2 t bo u khụng to giao t ABX De (0%) Vy phng ỏn ỳng l: D .1, 2,4 Cõu 50: Cho s ph h sau: Trang 13 /14 - Mó thi 12 7 Bit rng hai cp gen qui nh hai tớnh trng núi trờn khụng cựng nm trong mt nhúm gen liờn kt; bnh húi u do alen tri H nm trờn NST thng qui nh, kiu gen d hp Hh biu hin húi u ngi nam v khụng húi u ngi n Cp v chng III10... mch ADN khuụn Phng ỏn ỳng l: A 4, 5 B 1, 2, 3 C 1, 2, 3, 4, 5 D 1, 3, 4, 5 Cõu 45: Phỏt biu no sau õy v a dng ca qun xó l khụng ỳng? Trang 12 /14 - Mó thi 12 7 A a dng ca qun xó cng cao thỡ li thc n ca qun xó cng phc tp B Trong quỏ trỡnh din th nguyờn sinh, qun xó xut hin sau thng cú a dng cao hn qun xó xut hin trc C a dng trong qun xó cng cao thỡ s phõn húa sinh thỏi trong qun xó cng mnh D a dng... b ng nờn t ti lờ KG q 2(aa) = 0 ,16 qa = 0,4 => pA = 0,6 + Khi chi xet riờng gii n thi X mXm = 0, 01 Tõ n sụ alen m l 0 ,1 v tn s alen M l 0,9 + CTDT cua QT ngi vờ tinh tra ng thuõ n tay la 0,36AA + 0,48Aa + 0 ,16 aa =1 + Do bụ me ờ u thõ n tay phai nờn xac lõ p la i ti lờ ta co : 3/7AA: 4/7 Aa + Bụ me thuõ n tay phai sinh ra con thuõ n tay trỏi vi xỏc sut: (4/7)2 x 1/ 4 = 4/49 + Bụ khụng bi bờ nh P... III10 v III 11 sinh c mt ngi con gỏi khụng b bnh P v khụng húi u, xỏc sut ngi con gỏi ny cú kiu gen d hp v c hai tớnh trng l bao nhiờu? Bit ngi II8 cú kiu gen d hp v bnh húi u A 26,48% B 34,39% C 33 ,10 % D 15 ,04% HNG DN GII: Quy c gen: A: b.thng > a: bnh (P) HH: húi ; Hh : húi nam, khụng húi n ; hh: khụng húi Xột bnh P: Bnh do gen ln trờn NST thng quy nh III (10 ) = (2/3A : 1/ 3a) x (1/ 2A : 1/ 2a) = 2/6AA... (XMXm; XmXm; XMY; XmY) Vy F1 cú ti a: 4x4x4x3 =19 2 kiu gen ỏp ỏn C AB De dE X X , trong ú khong cỏch gia ab gen A v gen B l 20cM, gia gen D v e l 30cM T l ca giao t ABX De thu c cú th l: Cõu 49: rui gim, xột hai t bo sinh dc cú kiu gen (1) 10 0%, (2) 50%, (3) 25%, (4) 0%, (5) 14 % Phng ỏn ỳng l: A 1, 3, 4 B 2, 4 C 2, 3, 4, 5 HNG DN GII D 1, 2, 4 Hai t bo trng cho ti a 2 loi trng Th1: 2 t bo trng gim phõn... trong h sinh thỏi C Nng lng c vn chuyn thnh dũng trong h sinh thỏi, mc tiờu hao ngy cng ớt dn qua cỏc bc dinh dng D Hiu sut chuyn húa nng lng chui thc n trờn cn cao hn chui thc n di nc Cõu 38: Cho cỏc s kin sau v quỏ trỡnh phỏt sinh v phỏt trin ca s sng trờn Trỏi t: (1) Sinh vt nhõn thc c nht ó xut hin i Nguyờn sinh (2) Loi thc vt u tiờn ó xut hin ti k Silua (k Ocovic) (3) Cõy ht trn, thỳ v chim ó... tiờn ó xut hin ti k Silua (k Ocovic) (3) Cõy ht trn, thỳ v chim ó phỏt sinh ti k Triat (cõy ht trn phỏt sinh k Cacbon) (4) Cụn trựng v lng c ó xut hin ti cựng mt k i C sinh Cỏc s kin ỳng l: A 1, 2, 3, 4 B 1, 2, 4 C 2, 3 D 1, 4 Cõu 39: Quan h h tr gia cỏc cỏ th trong qun th khụng cú ý ngha no sau õy? A Lm tng kh nng sng sút v sinh sn ca cỏc cỏ th B Tng cng dinh dng v kh nng chng chu ca cỏ th C Giỳp .     A. 7. B. 3. C. 11 . D. 9. HƯỚNG DẪN GIẢI: 9 /16 A-B-D- h 2 TH: + TH1: 9 /16 A-B- x 1D- . Trang 1/ 14 -  12 7  KHỐI CHUYÊN TRUNG HỌC PHỔ THÔNG (Đề thi có 08 trang) ĐÁP ÁN CHI TIẾT   Mã đề thi 12 7.  .1/ 4 .1/ 4. = 1/ 32  1 3/4 .1/ 4 . 1-   = 1/ 32 x 64 /11 = 2 /11 . Câu 8: 