[r]
(1)so crao Dyc v4 oao rAo ri rnr cHeN Hec srr{H cror rimr
DAKLAK N@19
ui cnlxn rmlc UON: SIIYH HQC 9 - THCS
(Di tht gom 02 trong) ghdi gian: 150 philt, kh6ng tri gao di)
Ngiy thr: l0l4l20l9
CAu 1Z,O diaml
a Phdn biQt benh budu c6 thitiu i6t va bQnh Bazod6?
b Cho bi6t nguy6n nhdn gdy m6i co?
Ciu2 (2,0 didm)
Nhting hopt dQng ndo cta nhiSm sic th€ chi c6 gi6m phan md kh6ng c6 ffong nguyOn ph6n? Cho bii5t y nghia ct.r cdc hopt <tQng it6
Cfiu (2,0 ctiilm)
Gi6i thich vi sao hai ADN du-o c tqo raqua co ctrti nnan cl6i lai gi5ng ADN m9?
C6 truong hgp ndo qua nhdn d6i ADN 14i kh6c ADN m9 kh6ng?
Ciu 4 (2,0 cti€m)
a Chu6i nhd tam bQi (3n), chu6i rtmg ludng bQi Q$ HAy gi6i thich ngudn g6c vd qu6 trinh xu6t hiQn c6 th€ c6 cria chuOi nhd tarn bQi (3n)
b Trong ti5 bao srnlr dudng cria mQt ngudi nfr.c6 47 NST, cVc cdp.NST tU I d}n22
binh thuong Hdy cho biiSt nguoi nt bi benh di truy€n gi? D[c cli€m ki€u hinh cria ngu]i ndy
Cflu (2,0 diAm)
a Vi sao lai kinh ti5 lai F1 thuong dugc dtng <16 san xudt me kh6ng dung
ldm giting?
b Su t.u thu ph6" bit buQc li6n ti6p qua nhi6u th6 he d nhfrng cdy giao ph6n sE ddn d€n k6t qui nhu thi5 ndo?
Cffu (2,0 diAm)
Cho bii5t c6c d4ng tdi nguy6n thi6n nhi6n chri y6u sau: d6t, nu6c, khoring san, sinh
vflt, nmg
a Hdy x6c dinh c6c dpngtdi nguy6n t6i sinh
b Trinh bdy c6c biQn ph6p srl dpng hqp li tdi nguy6n rimg
Cia7 (2,0 di€m)
a trrtOi quan he d6i dich rong qu6n xd sinh vflt gdm nhtirrg dang ndo? L6y vi dg
minh hga
b N€u img dung mtii quan he d6i dich san xu6t n6ng - hm nghiQp L6y vf dp
(2)Ciu 8 (2,0 ctidm)
O thgc vft, c6 hai ph6p lai gifra c6c thiS di hsp vd,Z clp gen (ki hiQu c{p gen ld A, a
vd B, b), m6i c{p gen quy tlinh mQt cpp tinh trqng vd nim tr6n NST thudrng, tffi trgng trQi
h trQi hoan todn
- Ph6p lai 1: Hai cpp gen ctng nim tr6n mQt cflp NST tuong ddng vi di truyCn 1i6n
k6t
- Ph6p Lai2: Hai cflp gen nim tr6n hai cflp NST tuong cl6ng kh6c
a.Xic dinh ti lQ phdn li ki6u gen cria ph€p lai n6i tr€n
b Viet c6c kiiSu gen c6 cung ki6u hinh trQi vd c6 2firfr.trang o m5i phdp lai r5t cb cic truong hqrp
C6u (2,0 dihm)
- O I loii etQng vQt, giit srl xdt 100 t6 bdo sinh tr(mg vi 100.ti5 bdo sinh tinh ttAu c6
kiiSu gen Aa Trong qu6 trinh gi6m ph6n ph6t sinh giao tt, c6 10 tti bio sinh tinh xiy,ra sg
kh6ng phen I nhiSm sic th6 giirnphdn II d c6c tti bao c6 chrta gen A, c6c tti bdo
kh6c gi6m phen binh thuong
a C6 bao nhi6u giao trl <lUc binh thucrng dugc hinh thdnh? Trong sti c6c giao tfi dgc, ti lQ giao trl dyc binh thuong chrla gen A li bao nhi6u?
b Gie st c6 10 hqrp tft dugc hinh thanh, tinh hi€u su6t thu tinh cria timg?
CAu 10 (2,0 ctiAm)
O mQt lodi clQng v$t, cdthiS elUc c6 cflp nhi6m s[c th6 gi6i tffi X[ c6 th6 c6i XY.
Qu6 trinh SU tqt tpo mQt.sti tgp 4 c6 t6ng s5 ntriEm s6c th6 <ton li 720,frongd6lll2 tintri6m sac th6 gi&i tinh, nfriern sic th6 x e6p 2liinnhiEm s6c th6 v iac tl'inh so ca
the ifuc vd c6 ttri5 cai dugc hinh thenh tt nh6m trq,p hi tr6n? gi.5t ti lQ hqp tfi )O( ph6t tri6n
thanh co th6 ldgll},ti lQ hqrp trl XY ph6t tri6n thdnh co th6 ld 5O% HET
- Thi sinh kh6ng dugc st {rng tii li-€u - Gi6m thi lrt6ng gi6i thich gi th€m
Hg vd t€n thf sinh: SO b6o danh: