A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: B
Solution :
The lampbrush chromosomes are highly elongated special kind of synapsed mid-prophase or diplotene chromosome bivalents which have already undergone crossing over. They occur in diplotene stage of most animal occystes, spermatocytes of many and even giant nucleus of unicellular alga Acetabularia. The number of pairs of loops gradually increase in meiosis till it reaches maximum is diplotene.
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