Assertion: Polytene chromosomes have a high a | vedclass

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(A) Polytene chromosomes are giant chromosomes found in the salivary glands of Drosophila larvae.They are formed through a process called endoreduplic

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If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

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(A) Polytene chromosomes are giant chromosomes found in the salivary glands of Drosophila larvae.They are formed through a process called endoreduplication or endomitosis,where the $DNA$ replicates repeatedly without the cell dividing.Because of this repeated replication of $DNA$ strands,these chromosomes contain a very high amount of $DNA$ and appear as thick,banded structures.Therefore,the Assertion is correct,and the Reason correctly explains why they have a high amount of $DNA$.

Assertion: Polytene chromosomes have a high amount of $DNA$.
Reason: Polytene chromosomes are formed by repeated replication.

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Assertion: Polytene chromosomes have a high amount of $DNA$.Reason: Polytene chromosomes are formed by repeated replication.