Question

The number of chromatids, in a chromosome at anaphase is

• A. 2 in mitosis and 1 in meiosis
• B. 1 in mitosis and 2 in meiosis
• C. 2 each in mitosis and meiosis
• D. 2 in mitosis and 4 in meiosis

Answer 1

Answer: (B)

1 in mitosis and 2 in meiosis

Meiosis occurs in two stages meiosis I and meiosis II. During meiosis I, homologous chromosomes separate and the number of chromosomes in daughter cells get reduced to half. This division is known as reductional division. During meiosis II, centromere splits and the chromosome number remains the same in the daughter cells. Hence, meiosis II is known as equational division. Hence, the number of chromatids in a chromosome at anaphase is 1 in mitosis and 2 in meiosis.

So, the correct answer is option B.