so<br />
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cno<br />
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DUC vA<br />
<br />
TIIIH TrIAr<br />
-L-<br />
<br />
oao<br />
<br />
r4o<br />
<br />
NGUYEN<br />
<br />
rHr cHeN Hec srNH crOr LOp g rHCs<br />
<br />
Bt CniXH THtfC<br />
<br />
CAU<br />
<br />
NAM HgC 2017 -2018<br />
MON SINH IIOC<br />
Thdi gian: 150 phrit fth6ngtc€ thdi gtan gtao di)<br />
Ngey tht:03/412018'<br />
DC thi gdm 2 trang, 10 cdu h6i, m6i ciu2,0 tli6m.<br />
<br />
I<br />
a) Phdn<br />
<br />
x4ld gi? Phan<br />
<br />
biQt phan<br />
<br />
4 khdng eliOu kiQn vd phan x4 c6 diOu kiQn.<br />
<br />
b) Hign tuqng clrp 16 cin cdy trinh nfr ktri ta dQng vdo c6 ptrai n mQt phan x4<br />
khdng? Hi€n tuqng d6 c6 di6m gi giting vd kh6c hipn tucrng "khiihpm tay vdo lta ta<br />
<br />
ryttay lqi"?<br />
Cfru2<br />
<br />
6 cd chua, gen A quy ifinh.thdn cao, gen a quy dinh thdn th6p, gen B quy di+<br />
qup trdn vd gen b quy ttinh qud bAu ftrc. Hai cfip gen ndy nim n6n hai c4p ntriEm sic<br />
th€ (NST) tuong ddng kh6c nhau.<br />
a) C6 nhifng kiOu gen ndo quy dinh cdy thdn cao, qud trdn vd cdy thdn thAp, qui<br />
.<br />
bdu dpc.<br />
b) HAy x6c clinh c6c c{p bti me dem lai dti:<br />
- F1 c6 100% cdy thdn cao, qud trdn.<br />
- F1 phdn li ki0u hinh theo<br />
- F1 phdn<br />
<br />
ti le 1 : I : 1 : l.<br />
<br />
li ki6u hinh theo ti<br />
<br />
lQ 1<br />
<br />
:<br />
<br />
l.<br />
<br />
Ciu 3<br />
<br />
'bd aa SEe XX, sinh vft ndy trdi qua<br />
<br />
MQt sinh vflt c6 bO NST dugc kf hiQu ld<br />
<br />
qu6 trinh gi6m phan binh thuong c6 khd ndng t4o ra nhirng lopi giao trl ndo?<br />
CAU 4<br />
<br />
a) Tai sao nhimg di6n bi6n cria NST trong ki sau ciia gidm phdn.I ld co ch6 t4o<br />
n6n sp ktrdc nhau vd ngu6n g6c NST trong b0 ttcrn bQi (n NST) 6 cdc ti5 bao con dugc<br />
tpo thanh qua gi6m phdn?<br />
<br />
Vi<br />
<br />
sao bQ NST ttflc tnmg o nhfng<br />
duy tri 6n ttfnh qua c6c this he?<br />
Q)<br />
<br />
loii<br />
<br />
sinh sin htu tinh giao ph6i fui<br />
<br />
ducr. c<br />
<br />
Cf,u 5<br />
<br />
C6 2 ti5 bao cria mQt co thO ruOi gi6m tii5n hanh nguy6n phdn liOn titip 6 mn.<br />
25% sd tti bao con ti6p tuc gi6m phdn dd tpo ra ducr. c 128 giao-ttr. Hdy x6c dinh:<br />
a) Sd NST md m6i truong cung c6p cho nguy€n phdn.<br />
<br />
b) SO NST md mdi trudrng cung c6p cho gi6m phdn.<br />
c) Gi6i tfnh cria co th6.<br />
<br />
Ciu<br />
<br />
6<br />
<br />
a) Nguy}ntilc bd sung th6 hien nhuth6 ndo trong cdu trfc vd c6c co chti di<br />
.<br />
truy6n o cdp ilQ ph6n tt?<br />
trOn<br />
<br />
b) Ngu6n gtic chung vd sp da d4ng cria sinh gi6i dugc gi6i thfch nhu th6 ndo<br />
co sd cdu tpo cta ADN?<br />
<br />
CiuT<br />
Gen B c6 3000 nucl€dtit, trong d6 ad6nin (A) chitim tj/ lQ 20%. Gen B tlQt bitln<br />
hm xtf6t hi$n gen b. Khi gen b t.u nhan d6i binh thudrng 2ldn, dd'lily fi mdi trucrng nQi<br />
bdo 8994 nucl€dtit.<br />
a) Tfnh si5 nucl66tit timg lopi cria gen tru6c vd sau<br />
<br />
b) Qua quri trinh sinh<br />
<br />
san hiru tinh,<br />
<br />
l*ri<br />
<br />
etQt<br />
<br />
bii5n<br />
<br />
khi ndo thi tiqh trang do gen b quy dinh<br />
<br />
dugc bi€u hiQn?<br />
CAU<br />
<br />
I<br />
<br />
a) Tir gi6,ng bu(fi 2n c6 kiOu,gen AA vd dung dich c6nxixin c6 n6ng dO thich<br />
hqp. Hay cho bitit cic cilchtpo ra gi6ng budi 4n c6 ki€u gen AAAA.<br />
b) Phan biQt co th€ tam bQi voi co thti lu6'ng bQi vO vdt chdtdi tuy6n vd ki6u hinh.<br />
<br />
Cfiu 9<br />
a) Nghi6n cr?u di truyOn hgc ngudi<br />
<br />
gip nhimg kh6 kh6n gi?<br />
<br />
b) Benh mriu kh6 ddng 0 ngucri do mQt etQt bi6n gen l{n a nim tr6n NST gi6i<br />
tinh X gdy n6n. Mriu ddng binh thucrng do gen trQi A chi ph6i. MQt cap vg chdng m6u<br />
itdng binh thuong sinh mQt con trai mic bQnh m6u kh6 d6ng. Hdy x6c dinh ki6u gen<br />
cfia nhfrng nguli frong gia dinh n6i tr€n vd vi6t so dO lai?<br />
<br />
Ciu<br />
<br />
10<br />
<br />
Uu thO lai<br />
hiQn rd nfr6t o F1,<br />
<br />
li gi? Nguydn nhdn cria hiQn tuqng- uu thti lai? Tqisao uu ttrti tai UiCu<br />
sai Ao giam d6n qua c6c thiS hei<br />
<br />
----- HCt ------<br />
<br />
.<br />
<br />
Hg vd t6n:<br />
Thf sinh khdng sfi dpng tdi liQu khi ldm<br />
<br />
bii.<br />
<br />
SBD:<br />
Gi6m th! kh6ng gi6i thich gi th6m.<br />
<br />