Biologiya fanidan

12..Turpning somatic hujayrasida 18 ta xromasoma bo’lsa, bo’linayotgan hujayraning anafaza bosqichida xromatidlar sonini aniqlang.
A) 18 B) 36 C) 72 D) 32


13..Karam hujayrasida mitoz siklining G2 bosqichidagi DNK sonini aniqlang
A) 16 B) 18 C) 32 D) 36


14.Karam hujayrasida mitoz siklining G2 bosqichidagi xromasoma sonini aniqlang
A) 16 B) 18 C) 32 D) 36


15..Karam hujayrasida mitoz siklining G2 bosqichidagi xromatidlar sonini aniqlang
A) 16 B) 18 C) 32 D) 36


16..Erkak makaka somatik hujayrasida 42 ta xromasoma mavjud bo’lib, ulardagi barcha genlar gomozigota bo’lsa, silliq mushak hujayralarida necha xil DNK bor?
A) 22 B) 21 C) 42 D) 43


17..Urg’ochi kaptarning somatik hujayrasida 80 ta xromasoma bo’lib, ulardagi barcha genlar gomozigota bo’lsa, teri hujayralarida necha xil DNK bor?
A) 41 B) 80 C) 40 D) 78


18..Urg’ochi kaptarning somatik hujayrasida 80 ta xromasoma bo’lib, ulardagi barcha genlar gomozigota bo’lsa, tuxum hujayralarida necha xil DNK bor?
A) 41 B) 80 C) 40 D) 39


19..Urg’ochi shinshillada 78 ta xromasoma mavjud bo’lib, ulardagi barcha genlar gomozigota bo’lsa, mushak hujayralarida necha xil DNK bor?
A) 40 B) 39 C) 78 D) 76
20..Erkak shinshillada 78 ta xromasoma mavjud bo’lib, ulardagi barcha genlar gomozigota bo’lsa, mushak hujayralarida necha xil DNK bor?
A) 40 B) 39 C) 78 D) 76


21.Tez kaltakesak tuxum hujayrasida 19 ta xromosoma uchraydi. Somatik hujayradagi barcha genlar gomozigota bo’lsa, shu hujayrada necha xil DNK bor?
A) 38 B) 20 C) 19 D) 39


22.Qora kalamushning tuxum hujayrasidagi autosoma Xromosomalari soni 20 ga teng bo‘lsa hamda embryonal rivojlanishning maydalanish bosqichida hosil bo‘lgan hujayralarda jami xromoso-malar 21504 taga yetgan bo‘lsa, embrion necha marta meridian yo‘nalish bo‘ylab bo‘lingan?
A) 4 B) 10 C) 6 D) 5