NEET BIOLOGY

Detailed explanation-1: -The formation of sex cells is a central part of human reproduction: In fertilization, an egg cell and a sperm cell combine. These sex cells are also called reproductive cells or gametes. Sperm cells are produced in men’s testicles and egg cells are produced in women’s ovaries.

Detailed explanation-2: -They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm.

Detailed explanation-3: -The sperm and egg are specialised cells called gametes and are unique in comparison to most of the other cells in the body, as they only contain half the usual number of chromosomes.

Detailed explanation-4: -Most sexually reproducing organisms produce two different types of gametes or sex cells-a male gamete and a female gamete. Both are morphologically and structurally different from each other. Such a pair is called heterogametes.

Detailed explanation-5: -Sexual reproduction starts with the combination of a sperm and an egg in a process called fertilization. This can occur either inside (internal fertilization) or outside ( external fertilization) the body of the female.