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Question
The number of base pairs present around a histone octamer of nucleosome is ______.
Options
200
146
54
20
MCQ
Fill in the Blanks
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Solution
The number of base pairs present around a histone octamer of nucleosome is 146.
Explanation:
The nucleosome core particle is formed when 146 base pairs of DNA wrap about 1.65 turns around a histone octamer (two each of H2A, H2B, H3 and H4). This wrapping compacts DNA and is the basic repeating unit of chromatin; linker DNA of variable length connects adjacent nucleosomes.
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