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

(v20/21 -124-29) Agar oq nargisning endospermasi AAaBBb holatda bo'lsa, u holda shu endospermani hosil qiiishda ishtirok etgan changchidagi jinsiy hujayralarning meyoz bosqichidan oldingi (I) va keyingi (II) hamda meyoz bo'linishdan hosil bo'lgan hujayrani mitozning yakunlovchi (III) fazadagi holatini korsating.

1) AAbb; 2) AaBb; 3) aabb; 4) AAAAbbbb; 5) aaaabbbb; 6) AAaaBBbb; 7) Ab; 8) ab;

9) aaBb; 10)aaaaBBbb; 11)AABb.

1. 
   l-1; II- 7; III-1 ’
   
2. 
   l-5; II-8; III-8
   
3. 
   I - 3; II-5; III -5
   
4. 
   l-5, 10, 6; II-8; III-3
   

12. 
    (v20/21-125-25) Talabalar noma'lum shaxsning kariotipini o'rganish uchun . mitozning metafaza bosqichida tayyprlangan' preparatda autosoma xromosomalari. 44 ..; ta, jinsiy xromosomalari XXY ekanligini aniqladilar. Talabalar qaysi usulni qo'lladiiar ya qanday mutatsiya turini aniqladilar?'
    

1. 
   sitokimyoviy usul, gen mutatsiyasi
   
2. 
   sitogenetik usul, genom mutatsiyasi
   
3. 
   geneologik usul, genom vaxrornosoma
   

mutatsiyasi "

4. 
   biokimyoviy uSul, gen mutatsiyasi ¹
   

12.