The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated? - Biology MCQ Biology | ExamTest.live | ExamTest.live

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The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?

A $Deletion of non-essential genes$
B $Super-coiling in nucleosomes$
C $DNAse digestion$
D $Through elimination of repetitive DNA$

Solution & Step-by-step Explanation

In eukaryotes, the long DNA molecule is packaged through hierarchical levels of folding. It wraps around histone octamers to form nucleosomes, which further coil into chromatin fibers and chromosomes (super-coiling), allowing it to fit inside the small nucleus.

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The length of DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?

A

Deletion of non-essential genes

B

Super-coiling in nucleosomes

C

DNAse digestion

D

Through elimination of repetitive DNA

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