nitit rang gen a gdy bQnh bach tang.[r]
(1)so clAo DUC vA oAo r4o riNn rnAl NcuY0N
THI CHQN HQC SINH GIOI LOP TIICS NAvt HQC zors -2016
nnON sINIr HQC
Thdi gian: 150 phrit fthhng ke thdt gian giao dd)
Nedv tJtt:051412016
D6 thi edm2 trang, 10 cdu h6i, m6i cdu2,0 diOm
BB CUINH THTTC
CAU
a T+i ngudi talqi tiiSp m5u qua dudrng tinh m4ch md kh6ng phai bdng
duong dQng m4ch? -
U Mau o dQng m4ch ludn nhi6u 6xi vd it cacbdnic hcrn m6u tinh m4ch
ld dring hay sai? Vi sao?
Ciu 2
MOt t6 bdo mArn sinh dgc dgc vq mQt ti5 bdo mAm sinh dUc chi cua mQt lodi nguy6n phdn vdi sO tan bdng Chct6 bdo duq-c tqo.ru dAu tham gia gi6m phdn
ffi; r6d cenei;2O tinh trung vd tnmg Sd luqng nhi6m sic thO (NST) dcrn c6c
tinh trirng nhi6u hcrn c6c trimg la 3648'
a.-x6cdinh s6 tuqrrg tinh trung, s6luqng tnmg dugc tao thenh
b X6c dinh b0 NST lu0ng bQi cria lodi'
r fi"n sO NSf don mi m6i trulng nQi bdo cung crip cho qu5 trinh nguy€n phdn
oila cdct6 bdo mAm sinh duc Ciu 3
a Trinh bdy c6c phumg ph6p t4o uu thO lai o cdy o61g3, ! tA , ,
b Lai kinh tC n iif Tai sio ngudi ta kh6ng dtng lai kinh t0 dO nh6n gi6ng?
Ciu 4
Hdy so sanh qu6 trinh t6ng hqrp ADN vd mARN'
Ciu 5
O thgc vAt, cho t.u thg phAn o cAy giao phdn c6 hiQn tyqng tho6i ho6 MQt
thc he * ri- prra" ro-ioo/" n6" gen Aa, Jl" qqy phdn 1i0n ti6p qua c6c the hQ a Hdy x6c dinh ti lQ ki6u gen cira F3 (sau lAn tg thU phan) vd F5 (sau lAn t.u
thp phAn)
b Tt thi dU ndy hdy rfitnnguy€n nh6n ctra hiQn tuqng tho6i ho6 gi6ng cho t.u thp ph6n o cdY giao Ph6n
CAU
a Thudng biQn ld gi? Trinh biy dflc di6m bi6u hiQn cira thudng bitin'
b Ldm th6 ndo Oe Ui6t mot bitin di ndo t16 ld thucrng bi6n hay dQt bi6n?
Ciu 7
Gen B c6 t6ng s6 nucl66tit le-3000, sO li6n tc0t tridrO la 3500, gen ndy.bi dQt bi6n mAt nucl66titinann gen b Bict khi gen B vd b t.u nhdn d6i li6n ti€p ldn, sd
nucl€dtit lopi Ad€nin mdi t**g cung c6p cho gen b it hcrn gen B ld 14 nucl06tit' a Gen B g6m bao nhiOu chu lcj'xodn?
(2)Cf,u
a O ttfu Hd Lan, gen A quy dinh h4t tron trQi hoan todn so v6i gen a quy rtinh
hat nh5n Cho hai cay {du hpt tron giao phAn v6i nhau, thu rlugc F1 todi hat trcrn fiay
x6c dinh ti lQ phdn li kiOu hinh F2 Fr t.u t\u ph6n
b: cho giao ph6n cdy qud d6, ddi thudn-chring v6i c6y qui vdng, trdn thu6n
chring, thu dugc F1 chi c6 mQt lopi ki€u hinh Cho cdy F1 giao ph6n vdi nhau, dugc F2
gdm 300 cdy qui d6, trdn :600 cay qud d6, bau dpc : 300 c6y qu6 d6, dai : 100 cdy
qu6 vdng, trdn : 200.c6'y qui vdng, bAu dgc : 100 cdy qud vdng, ddi - HAy cho biOt rlac ili6m di truy0n cria m5i tinh tr4ng
- p6 ttri5 hp sau phdn ly kiOu hinh v6i ti lQ :1:1, itfti bi5 m9 phdi c6 ki6u gen
nhu th6 ndo?
CAU
ngudi ta thu chfn sdm : 1
O mOt lodi thgc vflt, khi cho hai cdy than cao, chin scnn giao ph6n v6i nhau, dugc F, phdn li theo ti 16: I cdy thdn cao, chin muQn :2 c6y
c6y thdn th6p, chin sdm Cho cdc cdy thdn cao, chfn muQn <r
phgn, nguoi ta thu dugc dcri g6m ch cdy th6n cao, chfn muQn vd c6 c6y th6n thdp, chn 4u0n Bii5t rang kh6ng xity radQt bi6n- Hfly x6c ilinh ki6u gen cta cdc cdy
b6 mp vd vitit so tI6 lai CAU 10
Scr dd pha hQ dudi t16y ld sg di truy6n bQnh b4ch t4ng d mQt gia dinh nitit rang gen a gdy bQnh bach tang Gi6 thitit cdc cdthe II3 vd 116 kh6ttg mang alen l{n
t-,) Ll Binh thucrng
O tspch r4ng
a.Xdc dinh ki6u gen cria cdc cdth€ l, 2,4,5,7 vd
b Xdc su6t dC II5 c6 ki6u gen di hqp trl bdng bao nhiOu?
c Ntiu x6y ry su ktit h6n gdn giua IIIT vd IiIs thi x6c su6t AC c1p vg ch6ng ndy
sinh ngudi ddu ldng mdc bQnh bach tang (tinh theo %) li bao nhi6u?
H9 vd t6n: SBD:
Thi sinh kh6ng srl dsng tdi 1i0u ldm bdi Gi6m thf kh6ng gi6i thich gi th6m
2
than
Frfu
cao,
thu