Question

Chromosome number is halved in ______.

Options

• meiosis I

• meiosis II

• mitosis

• amitosis

Answer 1

Chromosome number is halved in meiosis I.

Explanation:

During meiosis I, homologous chromosome pairs line up together and are pulled apart to opposite poles of the cell, effectively cutting the total chromosome number in half. This critical reductional division changes the cell from diploid to haploid. In contrast, meiosis II and mitosis are equational divisions that merely separate sister chromatids, leaving the overall chromosome number unchanged.