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Assertion- The bands of polytene chromos...

Assertion- The bands of polytene chromosomes become enlarge at certain regions to form puffs or balbiani rings.
Reason- These enlarged bands are active genes and represent the site of RNA synthesis.

A

Both assertion and Reason are true and reason is the correct explanation of assertion

B

Both assertion and reason are true, but reason is not the correct explanation of assertion

C

Assertion is true, but reason is false

D

Assertion is false, but reason is true

Text Solution

Verified by Experts

The correct Answer is:
A
The puffs represent region where tightly coiled chromosomal fibres open out to form many loops. Puffs are active genes and represent the sites of RNA synthesis.
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