A bivalent in metaphase I consists of

Four chromatids and four centromeres

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Four chromatids and two centromeres

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Two chromatids and two centromeres

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Two chromatids and one centromere

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Solution

The correct option is A Four chromatids and two centromeres
Bivalents are formed in prophase 1 of meiosis 1. In the next phase i.e.metaphase 1, these bivalents become arranged on the metaphase plate and are attached to the meiotic spindle. They consist of 4 chromatids and 2 centromeres. Thus the correct answer is option B.

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Similar questions

Question 6
A bivalent meiosis- I consists of
(a) two chromatids and one centromere
(b) two chromatids and two centromeres
(c) four chromatids and two centromeres
(d) four chromatids and four centromeres

Q. Four chromatids and two centromeres which are homologous, occurs in

Q. In the Metaphase stage of Mitosis, each chromosome consists of _____ chromatid (s), _______ centromere(s), _______kinetochore(s) and ______ unit(s) of DNA .

Q. Which of the following statements hold true for bivalents?
(i) Generally a bivalent is an association of four chromatids and two centromere.
(ii) It is a homologous chromosome.
(iii) Crossing over occurs between two different kinds of bivalents.

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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