AP BIOLOGY

Detailed explanation-1: -In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells. The number of chromosomes in a single set is represented as n, which is also called the haploid number.

Detailed explanation-2: -Every cell in the human body contains 23 pairs of such chromosomes; our diploid number is therefore 46, our ‘haploid’ number 23.

Detailed explanation-3: -In other words, gametes have only 23 chromosomes (referred to as the haploid number (1n). Meiosis, then, is the process by which specialized diploid stem cells in the ovary (oogonia) and testes (spermatogonia) produce eggs and sperm which have a haploid number of chromosomes.

Detailed explanation-4: -The homologous chromosomes are separated when gametes are formed. Therefore, gametes have only 23 chromosomes, not 23 pairs.

Detailed explanation-5: -Humans are diploid, and most of the body’s cells contain 23 chromosomes pairs. Human gametes (egg and sperm cells), however, contain a single set of chromosomes and are said to be haploid.