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. In humans, n = 23.

Detailed explanation-2: -Most cells in humans are diploid, comprising 23 chromosome pairs, so 46 chromosomes in total. This is 22 pairs of autosomes and a pair of sex chromosomes. One copy of each chromosome pair came from the individual’s mother and the other from the individual’s father.

Detailed explanation-3: -These cells contain 23 pairs of homologous chromosomes. Only gametes (sperm and eggs) are haploid, which means that these cells contain 23 chromosomes. Since we inherit one set of chromosomes from a father and the other one from a mother, that would make a total of 46 chromosomes.

Detailed explanation-4: -Each chromosome is composed of only a single chromatid following division, for a total of 23 chromatids. When the zygote is formed during the fusion of the sperm and egg cells, the final cell is diploid, containing 46 chromosomes (23 from each gamete).