What is the thickness of chromatin fiber or solenoid?
a) 20 mm
b) 30cm
c) 10nm
d) 10µm
Explanation: chromatin fiber is formed by the coiling of nucleosome about its axis to form a thick fiber
The chromatin fiber shows……regions.
a) two
b) three
c) four
d) five
Explanation: 1. Heterochromatin and 2. Euchromatin
Which of the following region/s of chromatin is highly condensed and unexpressed region?
a) euchromatin
b) heterochromatin
c) both a and b
d) none of them
Which of the following region/s of chromatin is non-condensed and the genes of this region are also expressed?
a) euchromatin
b) heterochromatin
c) both a and b
d) none of them
Explanation: when cell undergoes division, euchromatin is also condensed so that a uniform chromatin fiber is established
When cell division begins, the higher order of coiling of chromatin fiber gives rise supercoil which has diameter of……
a) 20 mm
b) 30cm
c) 10nm
d) 10µm
Explanation: immediately supercoil establish into the chromatid
What is the diameter of chromatid?
a) 200 mm
b) 300cm
c) 150nm
d) 700µm
Explanation: it occurs as a result of further coiling around itself
