Question

What would be possible during Pachytene of meiosis, if the gamete has n = 8?

1) 8 Tetrads; 8 pairs of centromeres; 16 pairs
of sister chromatids
2) 16 Tetrads; 1 pair of centrioles; 8 pairs of
sister chromatids
3) 8 Tetrads; 2 pairs of centriole; 8 pairs of
sister chromatids
4) 16 Tetrads; 2 pairs of centriole; 16 sister
chromatids

Answer 1

Tetrads are 4 chromatids belonging to a homologous pair of chromosomes. A cell continues to possess the paired state until it completes Anaphase I of meiosis.

So, there is no change in number whatsoever upto the completion of Metaphase I.

Homologous chromosomes appear as tetrads during the Pachytene stage of Prophase I of Meiosis I, for exchange of genetic material between non-sister chromatids. The tetrad stage continues upto Metaphase I of Meiosis I

So, the correct answer is '8 and 8'

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Answer 2

Explanation:

The correct answer is (8 and 8)

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