Question

At which stage does the chromosome number reduce from diploid (2n) to haploid (n)?

Options

• Meiosis I (Reduction Division)

• Meiosis II

• Spermiogenesis

• Mitosis during multiplication phase

Answer 1

The reduction in chromosome number from diploid (2n) to haploid (n) occurs during Meiosis I, also known as the first maturation or reduction division. During this division, a Primary Spermatocyte with 46 chromosomes produces two Secondary Spermatocytes, each with 23 chromosomes, achieving the critical ploidy reduction necessary for gamete formation.