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In humans, how many chromosomes does a cell have ?

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In humans, how many chromosomes does a cell have ?
posted Jul 7, 2015 by Kapil Kapoor

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In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the X chromosome, while males have one X and one Y chromosome.
Pairs of chromosomes
The 22 autosomes are numbered by size. The other two chromosomes, X and Y, are the sex chromosomes. This picture of the human chromosomes lined up in pairs is called a karyotype.

For More information plz refer the link http://ghr.nlm.nih.gov/chromosomes

answer Jul 7, 2015 by Vrije Mani Upadhyay
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