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Due to an error in meiosis, the gene for linker histone H1 got deleted in a muta

ID: 142134 • Letter: D

Question

Due to an error in meiosis, the gene for linker histone H1 got deleted in a mutant Caenorhabditis elegans (figure B). Suppose that the core histones bind to 145bp, the linker DNA covers 30 bp and the linker histone binds to additional 15bp of DNA, what will be the amount of DNA that is wrapped around the octamer and linker histone H1 in a normal worm (figure A) and what will be will be the amount of DNA wrapped around the nucleosome in the mutant Caenorhabditis elegans (figure B)? 160bp, 145bp 145bp, 160bp 160bp, 175bp 175bp, 160bp

Explanation / Answer

Answer - 175bp 175bp,

chromatosome -160 bp DNA (145 + 15 bp associated with H1 histone)

H1 is deleted so, it not able to bind 15bp of DNA.

So, Octamer 145bp DNA + Linker DNA 30bp present in the mutant form.

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