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

(v17-130-13) Uy mushugining tana hujayraiarida xrornosomalar soni suvaraknikidan 10 taga kam. Mushuk tuxumdoni hujavralarining etilish zonasi anafaza.sida II xromosomalar (a) va DNK molekulalari (b) sonini aniqlang.

A) a-38; b-38 B)a-19;b-19

C)a-19;b-38 D) a-28; b-56

81. 
    (v18-1-462) Xrizantemaning murtak
    

xaltasida jami 144 xromosoma bo'lsa, ildiz qinchasidagi xromosomalar sonini aniqlang. A)9 B)24 C) 18 D)36

81. 
    (v18-1-463) Xrizantemaning murtak
    

xaltasida jami 144 xromosoma bo'lsa, ildiz qinchasidagi autosoma xromosomaiar sonini aniqlang. » ,

A)26 B) 34 C) 18 D)3O ,

81. 
    (v18-1-464) Meyoz natijasida hosil bo'lgan odam hujayralarida 23 tadan xromosoma bo'lsa, shu jarayon interfaza bosqichining G₂ davrida hujayralarda nechta xromatida bo'ladi?
    

1. 
   46 B) 92 C) 184 D)69
   

81.