D. 72 510. Lansetnik qaysi sinfga mansub?
A. lansetniklar B. baliqlar
C. xordalilar D. bosh skeletsizlar
511. Aralash bezlardan ajraladigan oqsil strukturali
moddalarni aniqlang.
A) insulin, tripsin B) glukokortikoid, insulin
C) pepsin, tripsin D) esterogen, androgen
512. Sholi spermatozoididagi xromasomalar soni
makkajo’xori gaploid to’plamidan 2 taga ko’p. Agar shingilda
27 ta don hosil bo’lgan bo’lsa, markaziy hujayradagi jami
xromasoma sonini aniqlang.
A) 648 B) 972 C) 324 D) 486
513. Sholi spermatozoididagi xromasomalar soni
makkajo’xori gaploid to’plamidan 2 taga ko’p. Agar shingilda
27 ta don hosil bo’lgan bo’lsa, tuxum hujayradagi jami
xromasoma sonini aniqlang.
A) 648 B) 972
C) 324 D) 486
514. Zog’ora baliqda meyozning profazasida 13-24-35 juft
gomologik xromasomalar krossingoverga uchradi.
Krassingoverga uchramagan xromasomalar sonini aniqlang.
A) 98 B) 6 C) 104 D) 100
515. Zog’ora baliqda meyozning profazasida 13-24-35 juft
gomologik xromasomalar krossingoverga uchradi.
Krassingoverga uchragan xromasomalar sonini aniqlang.
A) 98
B) 6 C) 104 D) 100
516. Zog’ora baliqda xromasomalar tetradasi nechta.
A) 104
B) 52 C) 51 D) 102
517. Diploid navli qalampirning tetradalar sonini aniqlang.
A) 48 B) 46
C) 24 D) 12
518. Turpda birlamchi jinsiy hujayra xromasomalarini ikki
qutbga tarqalishiga to’sqinlik qiladigan eritma tomizilganda
hosil bo’ladigan tuxum hujayradagi xromasomalar sonini
toping.
A) 18 B) 9 C) 36 D) 20
519. Turpda birlamchi jinsiy hujayra xromasomalarini ikki
qutbga tarqalishiga to’sqinlik qiladigan eritma tomizilganda
urug’langan tuxum hujayradagi xromasomalar sonini toping.
A) 18
