Biologiya online maktab deb qidiring

A) tukan, qizilto`sh, lansetnik B) vidra, kabarga, vixixol C)kvaksha, triton, povituxa D) alligator, iguana, hamelion


49.
Birinchi raqamda ko`rsatilgan murtak varaqlaridan qaysi organlar hosil bo`ladi?
A)ichak epiteliysi, hazm qilish bezlari
B) teri epiteliysi, nerv sistemasi, sezgi organlari
C) tog`ay , suyak , qon D) jigar, buyrak va bezlar


50.
Ikkinchi raqamda ko`rsatilgan murtak varaqlaridan qaysi organlar hosil bo`ladi?
A)ichak epiteliysi, hazm qilish bezlari B) teri epiteliysi, nerv sistemasi, sezgi organlari C) tog`ay , suyak , qon D) jigar, buyrak va bezlar



51.Meyozning ushbu bosqichida pomidorda xromosomalar soni 48 ta bo`lsa , meyozning anafaza I bosqichida xromosoma soni qancha bo`ladi?
A)12 B) 24 C)36 D)48


52. Meyozning ushbu fazasida

qalampirda DNK(1) va Xromosomalar(2) soni qanday bo`ladi?
A) 1-24,2-24 B)1-24, 2-48 C)1-48,2-48 D)1-48, 2-96
53. Jag`-jag` o`simligida olchaga nisbatan ikki barobar kam xromosoma bo`lsa, uning mitoz sikli anafaza bosqichida qutblarga nechtadan xromosoma tarqalgan?
A) 16 B)32 C) 64 D) 96
54. Bodiringning somatik hujayrasida 26 ta autosoma b`olsa, bo`linayotgan hujayraning anafaza bosqichida xromosomalar sonini aniqlang.
A) 26 B)52 C)56 D)102
55. Ko`l baqasi somatik hujayrasi autosomasida 22 ta xromosoma bo`lsa, meyozning telofaza I (a) va telofazaII (b) bosqichlarida DNK sonini aniqlang.
A) a-11, b-12 B)a-12, b-12 C) a-11, b-22 D) a-22, b-44
56. Kaola somatik hujayrasida xromosomalar soni drozofillaga nisbatan ikki barobar ko`p bo`lsa, mitoz sikli interfazadan so`ng DNK sonini aniqlang.
A) 8 B)16 C) 24 D) 32
57. Kaola somatik hujayrasida xromosomalar soni drozofillaga nisbatan ikki barobar ko`p bo`lsa, mitoz sikli interfazadan so`ng xromosomalar sonini aniqlang.
A) 8 B)16 C) 24 D) 32
58. Kaola somatik hujayrasida xromosomalar soni drozofillaga nisbatan ikki barobar ko`p bo`lsa, mitoz sikli anafazadan so`ng DNK sonini aniqlang.
A)16 B) 24 C) 32 D)64
59. Kaola somatik hujayrasida xromosomalar soni drozofillaga nisbatan ikki barobar ko`p bo`lsa, mitoz sikli anafazasida xromosomalar sonini aniqlang.
A) 8 B)16 C) 24 D) 32
60. Gorilla xromosomalar to`plamidan oltitaga ko`p bo`lgan qo`y zigotasining uch marta meridianal bo`linishidan hosil bo`lgan blastomerlardagi xromosomalar sonini toping.
A)548 B) 416 C)832 D)864
61. Gorilla xromosomalar to`plamidan oltitaga ko`p bo`lgan qo`y zigotasining ikki marta ekvatorial bo`linishidan hosil bo`lgan blastomerlardagi autosomalar sonini toping.
A)832 B) 864 C)1664 D)1768
62.Drozofilla blastulasida 128 ta bo`lsa, ulardagi jinsiy xromosomalar yig`indisi nechaga teng
A)128 B)256 C)254 D) 512
63. Drozofilla blastulasida 128 ta bo`lsa, ulardagi autosomalar yig`indisi nechaga teng
A)768 B)334 C) 464 D) 512
64.Shimpanze hujayrasidagi xromosomalariga nisbatan ikki marta kam xromosomaga ega bo`lgan kvaksha zigotasi hujayralarda interfazaning G<sub>2</sub> davridan keyin jami DNK(a) va xromosomalar (b) lar soni qancha bo`ladi.
A)a-48, b-24 B) a-24, b-4 8 C) a-24,b-24 D)a-48, b-48


65.Shimpanze hujayrasidagi xromosomalar sonidan ikki marta kam xromosomaga ega bo`lgan kvaksha zigotasining bo`linishidan hosil bo`lgan blastomerlarda autosomalar soni 2816 taga yetgan bo`lsa. U necha marta meridianal va ekvatorial bo`lingan?
A) 3-meridianal, 2-ekvatorial B) 4-meridianal, 3-ekvatorial
C) 5-meridianal, 4-ekvatorial D) 2-meridianal, 1-ekvatorial

Genetika nazariy