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

(v15-133-6) Qaysi organizmlarda jinslar nisbati 1:1 ni tashkil etadi?

1) tok shillig'i; 2) dafniya; 3) bitiniya;

4) askarida; 5) temirchak; 6) qizil chuvalchang;

7. 
   baqachanoq; 8) oq planariya.
   

1. 
   1,3, 6, 8 B)1,3, 4, 5
   

C) 2, 6, 7,8 D) 2, 4, 5,7

94. 
    (v16-101-13) Kulrang tanali ko'zi qizil urg'ochi drozofila pashshasining (a), qora tanali ko'zi oq erkak drozofila pashshasining (b) genotipini aniqlang.
    

1) BBX^AX^A; 2) BBX^AX=; 3) BbX^AX=;.

4) BbX^AX^A; 5) BBX^AY; 6) BbX^AY; 7) BBX=Y;

8. 
   BBX=X=; 9) bbX*Y; 10) bbX^AX^A. A) a-1, 2, 8; b-7 B) a-2, 3, 4; b-9 C) a-1, 2, 3; b-5, 6 D) a-8, 10; b-7, 9
   

95. 
    (v16-101-17) Agar tovuqning somatik hujayrasida 78 tadan xromosoma bo'lsa, uning tuxum hujayralarida xromosoma holati qanday bo'ladi?
    

A)37+Y;37 + X B)39 + X;39 + Y C)38 + X;38 + X D)38 + Y;38 + X

96.