Question

Most multicellular eukaryotes form gametes by

• A. A single nuclear division and a single chromosomal division.
• B. A single chromosomal division and two nuclear divisions.
• C. Two chromosomal divisions and a single nuclear division.
• D. Two nuclear divisions and two chromosomal divisions.

Answer 1

The correct option is B

A single chromosomal division and two nuclear divisions.

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. Parthenogenesis is a type of asexual reproduction in which the offspring develops from unfertilized eggs. Oncogenesis or tumorigenesis is the formation of cancer, where normal cells are transformed into cancer cells. Binary fission ("division in half") is a kind of asexual reproduction.