A cell has 10 chromosomes arranged on the equatorial plate during metaphase I. Predict the number of chromosomes that will be arranged on the equatorial plate during metaphase II.

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Solution

The correct option is A 5
Metaphase I of meiosis I

The homologous chromosomes are arranged on the equatorial plate during metaphase I.

In the question, at this stage, the cell has 10 chromosomes (5 pairs of homologous chromosomes) arranged on the metaphase plate.

This is followed by cell division and the homologous chromosomes get segregated into the two haploid daughter cells (each daughter cell will have only 5 chromosomes).

Metaphase II of meiosis II

During metaphase II, the chromosomes align on the equatorial plate.

Since the daughter cells only have 5 chromosomes at this stage, the number of chromosomes at the equatorial plate during metaphase II will be 5.

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Metaphase II

Standard XII Biology

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