A bivalent of meiosis-I consists of
(a) Four chromatids and two centromere
(b) Two chromatids and two centromere
(c) Two chromatids and one centromere
(d) Four chromatids and four centromere
Ans. The answer is the option (a) Four chromatids and two centromere
Explanation: Bivalent is formed by pairing of two chromosomes. Hence, bivalent contains four chromatids and four centromeres.