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

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.. So sdnh su bien doi trong phan tirprotein trong tnremg hop dOt

TRIAING THPT NANG KHIEU Ki THI TUYEN SINH LOP 10 NAM HOC 2014-2015 DAI HOC TAN TAO MON THI : SINH HOC (CHUYEN)

-* - NO), thi : 13/06/2014

CHINH THI IC 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

b.2 So sdnh su bien doi trong phan tirprotein trong tnremg hop dOt thay the cap 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

a/ Mot hop tir binh thugng nguyen phan lien tiep 5 lan Tinh so lacing nhiem sac the trong tat ; ca

cdc to 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 ,

b/ Gen gay benh norgi con trai so 7 có nguOn goc tir ngtrgi nao trong pha he ?

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:

1 AabbccDD

2 aaBBccDD

3 AABBCCDD

4 aabbCCdd

I aaBBCCDD

II aabbCCDD III AAbbccdd

IV 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—