1. DNK: oqsil: RNKning nisbatini aniqlang:
a) 1:1,3:0,2
b)2:3:l
c)3:0,2:l
2. Odamning genetik materiali D N K n in g .....ta har xil mole-
kulalaridan iborat
a) 12
b)24
c)36
3. Xromatin oqsillari quruq massaning nechi foyizini tashkil
etadi?
a) 35-55%
b) 50-60%
c) 60-70%
4. Giston oqsillarini xromatindan ajratib birinchi bo‘lib kim
o‘rgangan?
a) A.Kossel 1890 yilda
b) Mechnikov 1850 yilda
C) Purkine 1655 yilda
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5. Hujayra boiinishidan oldin qaysi eng muhim jarayon so-
dir b oiad i?
a) DNK replikatsiyasi
b) DNK kompaktizatsiyasi
c) RNK replikatsiyasi
6. Metafaza xromosomasining uzunligi qanchani tashkil eta
di?
a) 4 mkmni
b) 6 mkmni
c) 7,5 mkmni
7. DNK spiralining giston oqsillari ustida o ‘ralishi bu
a) Nukleomera
b) Xromonema.
c) Nukleosoma
8. Xromonemalarning spiralsimon vigilishidan hosil b o ig a n
xromosoma iplari.
a) Xromomera.
b) Xromonema.
c) Nukleosoma
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