Question

2. What is the length of DNA that wraps around the Histone complex? Is it constant? Also, is there any difference between the DNA twist in DNA found in nucleosome versus the DNA found outside nucleosome?​

Answer 1

Answer:

I think the DNA has a infinite length.it only difference from RNA .

Answer 2

Answer:

The "length of the DNA" is defined by the "number of nucleotide pairs" present in it. Yes, it is constant.

Explanation:

For a mammalian cell, the length of the DNA will contain $6.6 \times 10^{9} \mathrm{bp} X 0.34 \times 10^{-9} \mathrm{bp}$This is much greater than that of the length of nucleus $\left(10^{-6} m\right)$

The measure of the DNA strand's length within a "species remains constant". However, it varies among each and every organisms to another depends on the  structure.

In a "eukaryotic cell", the nucleosome maintain the "functional unit" of a eukaryotic cell with the DNA strand around "eight histone pairs". This "double helix DNA" consist two long and thin strands, which is in the form of "twisted" like a spiral  and it is bound by proteins called "histone".

Hence, the "structure of DNA" within the nucleosome varies from that "outside" the nucleosome. Nucleosome is certain portion of DNA, present in outside of the nucleus that are wrapped around the proteins. But DNA present inside the nucleus, it form complex with protein called chromatin.