SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Identify where this occurs:Each bivalent aligns independently at the equator.
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Metaphase I
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Metaphase II
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Anaphase I
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Anaphase II
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Explanation:
Detailed explanation-1: -Metaphase I-Bivalents independently align at the metaphase plate. When the homologous chromosomes align at the metaphase plate during metaphase I, either the maternal or the paternal chromosome can be facing either pole. Therefore, there will be all possible combinations of chromosomes in the gametes.
Detailed explanation-2: -During metaphase, the chromosomes get arranged in the form of a plate called the equatorial plate or metaphase plate at the equator of the spindle. This plate is at right angles to the axis of the spindle and is formed of the kinetochores, the arms of chromatids trailing away.
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