AIIMS 2019 Botany Chromosomes Assertion Reason Question
Assertion: The lampbrush chromosomes are known as diplotene chromosomes bivalents. Reason: During diplotene, the number of loops is maximum.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Option B is correct because the assertion that lampbrush chromosomes are known as diplotene chromosomes bivalents is true; these structures are prominent during the diplotene stage of meiosis. The reason is also true, as the number of loops in lampbrush chromosomes is indeed maximal during this phase, but it does not directly explain why they are referred to as bivalents. Other options are incorrect because option A implies a direct explanation that does not hold, while options C and D misrepresent the truth of both statements. Understanding the structure and function of lampbrush chromosomes is crucial in studying meiosis and genetic recombination.
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