Number of chromosomes in a sex cell

The human genome has 46 chromosomes, arranged in 23 pairs. There are two sex chromosomes one pair among them known as X and Y chromosome. These two chromosomes are designated as gender determination chromosomes. Every man has X and Y chromosome and Y chromosome decides the male sex. Every woman has two X chromosomes.

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Chromosome - Number of Chromosomes in Various Organisms - Eukaryotes

Chromosome | Article about chromosome by The Free Dictionary

Organisms of many species are specialized into male and female varieties, each known as a sex. The gametes produced by an organism define its sex: males produce small gametes e. Individual organisms which produce both male and female gametes are termed hermaphroditic. Physical differences are often associated with the different sexes of an organism; these sexual dimorphisms can reflect the different reproductive pressures the sexes experience.

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chromosome

Cells divide and reproduce in two ways: mitosis and meiosis. Mitosis is a process of cell division that results in two genetically identical daughter cells developing from a single parent cell. Meiosis , on the other hand, is the division of a germ cell involving two fissions of the nucleus and giving rise to four gametes , or sex cells, each possessing half the number of chromosomes of the original cell. Mitosis is used by single-celled organisms to reproduce; it is also used for the organic growth of tissues, fibers, and membranes. Meiosis is found in sexual reproduction of organisms.

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Chromosomes are structures within a cell nucleus that are made up of many genes. Genes contain deoxyribonucleic acid DNA , which contain the genetic information used to synthesize proteins. Chromosomes are long strands within a cell that can contain hundreds or thousands of genes. Humans have anywhere from 20, to 30, genes.