Rohit Sir , In zygotene a pair of homologous chromosomes are formed ? Please explain the meaning of Bivalent and tetrad ? I did'nt understand.

I hope you gt it now

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bivalent means 2 and tetrad means 4
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Bivalent means a 2 homologous chromosome. And tetrad means 4 chromatids.
Refer the diagram .

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You can refer this image:)

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