Tuxumdonda urug'lanish jarayoni sodir bo'lganidan so'ng tuxum hujayra bachadon.,-■ nayiga o'tib, rivojlanishni davom ettiradi

(V20/21-101-12) Herbatseum megasporotsididagi (1), megasporotsidining I meyoz (2) va II meyoz (3) bo'linishidan keyin hosil bo'lgan hujayralaridagi xromosoma

(a) va xromatidalar (b) sonini ko'rsating.

1. 
   1 - a-52, b-52; 2 - a-26, b-52; 3 - a-26, b-26
   
2. 
   1 - a-26, b-26; 2 - a-13, b-13; 3 - a-13, b-13
   
3. 
   1 - a-26, b-52; 2 - a-13, b-26; 3 - a-13, b-26
   
4. 
   1 - a-26, b-26; 2 - a-13, b-26; 3 - a-13, b-13
   

81. 
    (v20/21-101-29) Tuxum hujayrasi jinsiy X yoki Y xrpmosoma tutadigan organizmlar ni ko'rsating?
    

1) gaviai; 2) triton; 3) podolariy; 4) ninachi;

5) gereford; 6) komuel; 7) kojan; 8) biy. A)1,2,4,6 B)1,3,6

C)2, 4, 7 D)1,3, 4

81. 
    (v20/21-102-13) Spermatogenezning p'sish bosqichiga mos keladigan ma'lumotlarni aniqlang.
    

1) interkinez kuzatiladi; 2) xromosomalar spirallashadl; 3) konyugatsiyalash^an xromosomalar ikkitadan xromatidaga ega;

4. 
   hujayra hajmi ortadi; 5) meyoz bo'linish kuzatiladi; 6) hujayraiardagi xromosomalar diploid to'plamga ega.
   

A)2, 4, 6 B)1,3, 5

C)1,3,4 D)2, 5, 6

81.