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Question
Assertion :DNA is associated with proteins. Reason: DNA binds around histone proteins that form a pool and the entire structure is called as a nucleosome.
Assertion :DNA is associated with proteins. Reason: DNA binds around histone proteins that form a pool and the entire structure is called as a nucleosome.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Assertion is correct as DNA is associated with proteins. DNA associated proteins include transcription factors which modulate the process of transcription, various polymerases, nucleases which cleave DNA molecules, and histones which are involved in chromosome packaging and transcription in the cell nucleus.Reason is correct and is the correct explanation of assertion as the nucleosome is the fundamental subunit of chromatin. Each nucleosome is composed of a little less than two turns of DNA wrapped around a set of eight proteins called histones, which are known as a histone octamer.Therefore, the correct answer is option A.
Assertion is correct as DNA is associated with proteins. DNA associated proteins include transcription factors which modulate the process of transcription, various polymerases, nucleases which cleave DNA molecules, and histones which are involved in chromosome packaging and transcription in the cell nucleus.
Reason is correct and is the correct explanation of assertion as the nucleosome is the fundamental subunit of chromatin. Each nucleosome is composed of a little less than two turns of DNA wrapped around a set of eight proteins called histones, which are known as a histone octamer.
Therefore, the correct answer is option A.
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