LIFE SCIENCE

Detailed explanation-1: -Egg and sperm cells have just 23 chromosomes each. That’s half as many chromosomes as regular cells. Through the process of fertilization, egg and sperm join to make a cell with 46 chromosomes (23 pairs), called a zygote. For each chromosome pair, one homologous chromosome came from each parent.

Detailed explanation-2: -Sexually reproducing organisms are diploid (having two sets of chromosomes, one from each parent). In humans, only the egg and sperm cells are haploid.

Detailed explanation-3: -Human sperm and egg cells have 23 single chromosomes because they are produced by a special type of cell division called meiosis, which doesn’t duplicate chromosomes before division. The resulting cells get one chromosome from each pair.