Which of the following is correct about bivalent?
(i) Bivalents are tetrads.
(ii) A bivalent means 4 chromatids and 2 centromeres.
(iii) One bivalent consists of 2 homologous chromosomes.
(iv) Bivalents form in zygotene.
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Explanation:
The two replicated homologous chromosomes associate to form a bivalent.
It is also known as tetrad and It is mainly formed during the pachytene stage of the meiosis.
They undergo chiasmata formation for recombination.
So, the correct answer is option A.
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