Egg and sperm cells are haploid
Sperm and egg undergo fusion to a zygote. The zygote will undergo developmental stages and growth to eventually form an individual of a specie. The number of chromosomes must be constant in a specie. To maintain a constant number of chromosomes in species the gamete cells undergo meiosis. Meiosis is the reduction division because it reduces the number of chromosome. It only occurs in diploid cells and reduces the diploid cells 2n to haploid cells n eg: gamete cells.
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Sexual reproduction uses a type of cell division called meiosis , which creates gametes , such as sperm and egg cells. The process of meiosis happens in the male and female reproductive organs. Just like in mitosis , a cell starts meiosis in interphase. In interphase, the DNA is copied, the cell grows and the organelles are copied too.
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This page has been archived and is no longer updated. Gametes are an organism's reproductive cells. They are also referred to as sex cells.
Sperm cells or spermatozoon are small and motile due to the flagellum, a tail-shaped structure that allows the cell to propel and move. In contrast, each egg cell or ovum is relatively large and non-motile. In animals, ova mature in the ovaries of females and sperm develop in the testes of males.