Given figure shows structure of nucleosome with their parts labelled as A,, B and C . Identify A,,B

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5.Molecular Basis of Inheritance

easy

The given figure shows the structure of nucleosome with their parts labelled as $A,\, B$ and $C$. Identify $A,\,B$ and $C$

$A -DNA$; $B -H_1$ histone; $C -$ Histone octamer

$A -H_1$ histone; $B -DNA$; $C -$ Histone octamer

$A -$ Histone octamer; $B -RNA$; $C -H_1$ histone

$A -RNA$; $B -H_1$ histone; $C -$ Histone octamer

(AIIMS-2017)

Solution

Nucleosome is a structural unit of a eukaryotic chromosome which consists of a length of $DNA$ coiled around a core of histones and are thought to be present only during interphase of the cell cycle. In the given figure of nucleosome structure, the parts marked as $A,\,B$ and $C$ are respectively $DNA$, $H_1$ histones and histone octamer.

Standard 12

Biology