What is the number of chromatids in a bivalen | vedclass

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(A) During the process of meiosis,specifically in the pachytene stage of prophase-$I$,homologous chromosomes pair up to form a structure called a biva

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$4$

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(A) During the process of meiosis,specifically in the pachytene stage of prophase-$I$,homologous chromosomes pair up to form a structure called a bivalent or tetrad.Each chromosome consists of two sister chromatids.Since a bivalent is composed of two homologous chromosomes,and each chromosome has two chromatids,the total number of chromatids in a bivalent is $2 + 2 = 4$.Therefore,a bivalent is also known as a tetrad because it contains four chromatids.

What is the number of chromatids in a bivalent of homologous chromosomes during synapsis?

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