Bivalents in meiosis are

Tetrad

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Pairs of non-homologous chromosomes

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Pairs of several chromatids

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Pairs of homozygous chromosomes

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Solution

The correct option is A Tetrad
Meiosis is characterized by the pairing of homologous chromosomes. Each such pair of the homologous chromosome is actually made up of two sister chromatids. Thus, each pair is actually a tetrad of chromatids. Two of these chromatids which are joined together at centromere are called as sister chromatids. Each pair of sister chromatid is non-sister chromatid for the other pair of sister chromatids.
So, the correct answer is option A.

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