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At which of the following stages, the ch...

At which of the following stages, the chromosomes appear single, thin and thread like?

A

Leptotene

B

Zygotene

C

Pachytene

D

Diplotene

Text Solution

Verified by Experts

The correct Answer is:
A
Leptotene also known as leptonema is the first stage of prophase I during which individual chromosomes begin to condense into long strands within the nucleus which are loossely interwoven. However, the two sister chromatids are still so tightly bound that they are indistinguishable from one another. They possess a string of swollen areas called chromomeres.
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