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(1)so cno DUC vA oao r4o rHr cHeN Hec srNH crOr LOp g rHCs
-L-TIIIH TrIAr NGUYEN NAM HgC 2017 -2018
MON SINH IIOC
Bt CniXH THtfC Thdi gian: 150 phrit fth6ngtc€ thdi gtan gtao di) Ngey tht:03/412018'
DC thi gdm trang, 10 cdu h6i, m6i ciu2,0 tli6m
CAU I
a) Phdn x4ld gi? Phan biQt phan 4 khdng eliOu kiQn vd phan x4 c6 diOu kiQn
b) Hign tuqng clrp 16 cin cdy trinh nfr ktri ta dQng vdo c6 ptrai n mQt phan x4 khdng? Hi€n tuqng d6 c6 di6m gi giting vd kh6c hipn tucrng "khiihpm tay vdo lta ta
ryttay lqi"?
Cfru2
6 cd chua, gen A quy ifinh.thdn cao, gen a quy dinh thdn th6p, gen B quy di+ qup trdn vd gen b quy ttinh qud bAu ftrc Hai cfip gen ndy nim n6n hai c4p ntriEm sic th€ (NST) tuong ddng kh6c
a) C6 nhifng kiOu gen ndo quy dinh cdy thdn cao, qud trdn vd cdy thdn thAp, qui bdu dpc
b) HAy x6c clinh c6c c{p bti me dem lai dti:
- F1 c6 100% cdy thdn cao, qud trdn
- F1 phdn li ki0u hinh theo ti le : I : : l.
- F1 phdn li ki6u hinh theo ti lQ : l. Ciu 3
MQt sinh vflt c6 bO NST dugc kf hiQu 'bdld aa SEe XX, sinh vft ndy trdi qua qu6 trinh gi6m phan binh thuong c6 khd ndng t4o nhirng lopi giao trl ndo?
CAU
a) Tai nhimg di6n bi6n cria NST ki sau ciia gidm phdn.I ld co ch6 t4o n6n sp ktrdc vd ngu6n g6c NST b0 ttcrn bQi (n NST) 6 cdc ti5 bao dugc tpo qua gi6m phdn?
Q) Vi sao bQ NST ttflc tnmg o nhfng loii sinh sin htu tinh giao ph6i fui ducr c
duy tri 6n ttfnh qua c6c this he? Cf,u
C6 2 ti5 bao cria mQt co thO ruOi gi6m tii5n hanh nguy6n phdn liOn titip mn 25% sd tti bao ti6p tuc gi6m phdn dd tpo ducr c 128 giao-ttr Hdy x6c dinh:
a) Sd NST md m6i truong cung c6p cho nguy€n phdn
b) SO NST md mdi trudrng cung c6p cho gi6m phdn
(2)Ciu 6
a) Nguy}ntilc bd sung th6 hien nhuth6 ndo cdu trfc vd c6c co chti di
truy6n o cdp ilQ ph6n tt?
b) Ngu6n gtic chung vd sp da d4ng cria sinh gi6i dugc gi6i thfch nhu th6 ndo trOn co sd cdu tpo cta ADN?
CiuT
Gen B c6 3000 nucl€dtit, d6 ad6nin (A) chitim tj/ lQ 20% Gen B tlQt bitln
hm xtf6t hi$n gen b Khi gen b t.u nhan d6i binh thudrng 2ldn, dd'lily fi mdi trucrng nQi
bdo 8994 nucl€dtit
a) Tfnh si5 nucl66tit timg lopi cria gen tru6c vd sau l*ri etQt bii5n
b) Qua quri trinh sinh san hiru tinh, khi ndo thi tiqh trang gen b quy dinh
dugc bi€u hiQn? CAU I
a) Tir gi6,ng bu(fi 2n c6 kiOu,gen AA vd dung dich c6nxixin c6 n6ng dO thich
hqp Hay cho bitit cic cilchtpo gi6ng budi 4n c6 ki€u gen AAAA.
b) Phan biQt co th€ tam bQi voi co thti lu6'ng bQi vO vdt chdtdi tuy6n vd ki6u hinh
Cfiu
a) Nghi6n cr?u di truyOn hgc ngudi gip nhimg kh6 kh6n gi?
b) Benh mriu kh6 ddng ngucri mQt etQt bi6n gen l{n a nim tr6n NST gi6i tinh X gdy n6n Mriu ddng binh thucrng gen trQi A chi ph6i MQt cap vg chdng m6u
itdng binh thuong sinh mQt trai mic bQnh m6u kh6 d6ng Hdy x6c dinh ki6u gen
cfia nhfrng nguli frong gia dinh n6i tr€n vd vi6t so dO lai?
Ciu 10
Uu thO lai li gi? Nguydn nhdn cria hiQn tuqng uu thti lai? Tqisao uu ttrti tai UiCu hiQn rd nfr6t o F1, sai Ao giam d6n qua c6c thiS hei
- HCt
-Hg vd t6n: SBD: