First slide

The DNA

Question

Which of the following statement is correct with respect to nucleic acids and packing of DNA?

Easy

A

The pyrimidines found in RNA are also found in DNA
B

Adenine pairs with Thymine of DNA and forms 3 hydrogen bonds between them.
C

DNA shows wrapping around $H_{1}$ for the formation of chromatin fiber
D

DNA shows wrapping around Histone octamer during the formation of chromatin fiber.

Solution

In DNA packing in the nucleus of eukaryotes the double helical DNA wraps around core histone octamer having two copies each of $H_{2} A, H_{2} B, H_{3}$ and $H_{4}$ histones.

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