Gametogenesis is defined as...

• A. The replication of DNA in germ cells.
• B. The process of forming gametes through meiosis.
• C. The division of somatic cells to form two identical cells.
• D. The formation of the placenta.

Answer: (B)

Gametogenesis is the production of gametes (sperm or eggs) through meiosis in the gonads, yielding haploid cells from a diploid germ cell. The defining feature is two consecutive meiotic divisions that halve the chromosome number and generate genetic diversity via crossing over and independent assortment. This process underlies the formation of mature sperm and ova, with males producing multiple sperm from a germ cell line and females typically yielding one ovum with polar bodies through asymmetric divisions. It’s distinct from DNA replication alone, somatic cell mitosis (which makes two identical diploid cells), and unrelated processes like placental formation.