A bivalent of Meiosis I consists of- Biology Q-A

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Standard XII

Biology

Zygotene

A bivalent of...

Question

A bivalent of Meiosis I consist of

Four chromatids and two centromeres

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Two chromatids and one centromere

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Two chromatids and two centromere

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Four chromatids and four centromere

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Solution

The correct option is A
Four chromatids and two centromeres

The correct option is A.
Explanation of the correct option:
Bivalent is formed during zygotene.
Each bivalent is made up of four chromatids, two of each chromosome.
The centromere is the part of a chromosome that attaches to the spindle during cell division.
Each bivalent, thus, contains two centromeres.
Final answer: A bivalent of Meiosis I consists of four chromatids and two centromeres.

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A bivalent meiosis- I consists of
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(b) two chromatids and two centromeres
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