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

(V20/21-143-23) Meyozning profaza

1. 
   bosqichida yuz beradigan hodisa qanday nomianadi?
   

A) kooperatsiya B) korrelyatsiya

C) konvergensiya D) krossingover

145. 
     (V20/21-144-1) Karamning diploid navida
     

(n = 9) meyoz jarayonida 2 juft xromosoma qutblarga notekis taqsimlandi. Yangi hujayralardagi xromosornalar sonini aniqlang? A)11yoki7 B)10yoki18

C) 28 yoki 26 - t, D)10 yoki 8 :■/>.•:•

1. 
   
   167. 
        (v21-103-6) Sperrnatogenezga mds
        
   
   keiuvchi javiblarni toping. ^;
   
   

2. 
   1 - o'sish davri, spermatagoniy, 2n2c;- yetilish davri, birtamchi spermatotsit, 2n4c;
   
3. 
   - ko'payish davri, spermatida, 1n2c
   

2. 
   2 - o'sish davsi, birlamchi spermatotsit, 2n4c; 3 - yetilish davri, ikkilamchi spermatotsit, 1n2c; 4 - spermatida, 1n1c
   
3. 
   1 - ko'payish davri, spermatagoniy, 2n2c;
   

2. 
   - yetilish dawi, birlamchi spermatotsit, 2n4c;
   
3. 
   - shakllanish davri, spermatida, 1n2c
   

4. 
   1 - ko'payish d'avri, spermatagoniy, 2n2c;
   

2 - o'sish davri, birlamchi spermatotsit, 2n4c;

I 3 - yetilish davri, spermatida, 1n2c