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

(vl 6-107-17) DNKning qo'sh zanjirida G nukleotidlari 40% ni tashkil etadi. DNKdagi gen asosida sintezlangan oqsil 400 ta aminokislotadan iborat bo'lsa, shu DNK qo'sh zanjiridagi nukieotidlar sonirii toping.

A) 960 B) 1200 C)600 Ь)2400

42. 
    (v16-108-14) DNKning bir zanjirida 180 ta triplet kod bo'lib, shundan 30 tasi adeninli nukleotid. Shu DNK asosjda transkripsiya bo'lgan i-RNKda guaninli nukleotidlar
    

soni DNKning o'sha zdnjirdagi adeninli nukieotidiaridan 4 rnarta кб‘р, sitozinlar soni guanindan 2 marta kam bo'lsa, DNK qo'sh zanjirdagi purin va pirimidin asoslar nisbatini toping.

1. 
   5 purin (330A+ 120G): 1 pirimidin (60C + 30U)
   
2. 
   1 purin (360A + 180G): 1 pirimidin (180C + 360T)
   
3. 
   5 purin (330A + 120G): 1 pirimidin (60C + 30T)
   
4. 
   2 purin (360A + 180G): 1 pirimidin (90C+180T)
   

43.