Dictionary » A » Autosome

Autosome

Definition

noun, plural: autosomes

(Science: Genetics)

Any chromosome not considered as a sex chromosome, or is not involved in sex determination. It occurs in pairs in somatic cells and singly in sex cells (gametes).


Supplement

For instance, a human somatic cell will normally contain 23 pairs of chromosomes (total=46 chromosomes). Twenty-two (22) of these pairs will be autosomes, and only one of them will be a pair of sex chromosomes (the X and Y chromosomes).

In sex cells like egg cell and sperm cell where chromosomes occur singly (total=23), 22 of them are autosomes while the remaining one is a sex chromosome (either X or Y chromosome).


Word origin: Gk, comb. form of autós ,self + Gk soma, body.

Related forms: autosomal (adjective).

Synonym: euchromosome.
Compare: sex chromosome.
See also: chromosomes.


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Need help in an assignment

first of all thanks, second I also thought that this is the answer, but my doctor published her answers and according to her the answer is 4-autosome dominant which appears only in males. that means the first male must be homozygote recessive and the first female must hetrozygote, but as we ...

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Answer no. 6 can also be Autosome..

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