2014 2015 de thi tuyen sinh lop 10 mon sinh hoc chuyên

TRIAING THPT NANG KHIEU Ki THI TUYEN SINH LOP 10 NAM HOC 2014-2015
MON THI : SINH HOC (CHUYEN)
DAI HOC TAN TAO
NO), thi : 13/06/2014
---*--CHINH THIIC
Thai gian : 150 phut (khong ke thin gian phdt de)
Cau 1: (2 them)
a/ Giai thich y ngliia soy do: gen (doan ADN) —4 mARN —> protein —> tinh tang.
b/ Mach goc cua mot gen sinh vat nhan sa cc') trinh to cdc nucleotic nhtr sau:
3'TAX AAG AGX TTA XTX GGG XGT GXA ATT5'
b.l. Viet trinh to cdc nucleotic troll mARN va trinh to cdc axit amin cua phan tir protein
hoan chinh dugc ma hod bgi gen tren.
thay the cap
b.2. So sdnh su bien doi trong phan tirprotein trong tnremg hop dOt
nucleotic thir 6 va mat cap nucleotic thU 6 teen gen.
(Cho Mat sv ma hod axit amin: UXG — Ser; XGU — Arg; GXA — Ala; GAG — Glu; UUX — Phe;
AUG — Met; AAU — Asn; XXX — Pro).
Cau 2: (2 diem)
CS ngtrgi, bo nhiem sac the 2n = 46.
ca
a/ Mot
; hop tir binh thugng nguyen phan lien tiep 5 lan. Tinh so lacing nhiem sac the trong tat
cdc t o bao dang ki sau cita lan nguyen phan thir 5.
b/ ci bo, trong qua trinh phat sinh giao tir, cap nhiem sac the gigi tinh cua met so to bao khong
phan li (cdc nhiem sac the con lai phan li binh thuemg). Viet tat ca cdc loai giao tir co the dugc
tao ra.
c/ Giai thich vi sao nhirng ngtrgi mac hei chung Dao, Tacna deu vO sinh ?
Cau 3: (2 diem)
ci melt loai thvc vat, gen A qui dinh tinh trang than cao la tri)i hoan toan so vgi gen a qui
dinh tinh trang than thap, gen B qui dinh tinh trang qua do la trOi hoan toan so vai gen b qui
dinh tinh trang qua yang. Cdc gen phan li dioc lap. Trong quan the thvc vat tren:

a/ Tim tat ca cac cap lai cho ket qua phan li kieu hinh d6i con la: 1:1:1:1 (chi viet kieu gen
oh be me).
b/ Cho cdc cay than cao, qua do di hop hai cap gen to thu phan. Viet kieu gen cila tat ca cdc cay
có kieu hinh than cao, qua do i dai F1.
c/ Cho tap giao cdc cay than cao, qua do a dgi F1 . Tim xdc suAt thu dtrgc cay than thap qua
yang a d6i con.
Cau 4: (1 diem)
Gen lan m qui dinh benh mu mau nAin tren nhiem sac the gigi tinh X khOng có alen
tucmg ung tren Y. Gen M qui dinh mat binh thuong. Cho pha he sau:
■

•
O

Nam binh thviyng
Nam mac bOnh

Nu binh thithng

a/ Viet kieu gen dm lung nored trong gia dinh teen. ,
norgi con trai so 7 có nguOn goc tir ngtrgi nao trong pha he ?
b/ Gen gay benh


Cau 5: (1 diem)
a/ Be tao con lai kinh too lon, nguei to can sir dung dung be,' me có kieu gen nao sau day de
mang 10 hieu qua nhdt:
TT
1
2

3
4

TT
I
II
III
IV

B8
AabbccDD
aaBBccDD
AABBCCDD
aabbCCdd

Me
aaBBCCDD
aabbCCDD
AAbbccdd
AAbbCCdd

b/ Vi sao khong dung con lai F1 de lam gi8ng ?
Cau 6: (2 diem)
a/ Trong to nhien, &Ong vat song thanh bdy dan, thuc vat song thanh nhom. Dieu nay co
ngliia gi ? Khi nao thi xay ra hien tugng ca the tach khoi nhom ?
b/ Hay neu nhfing hau qua cita cac truOng hop sau day: , ,
- Ngtr dan thuong xuyen khai thac cac ran san ho diroi bien de lam voi.
- Tren mot canh d8ng lila, ran bi san bat qua mire.
- Rung ngap man bi chat pha de lam dia nuoi thug san.

--Het—