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Somatic cells

Definition

noun, singular: somatic cell

The word “somatic” is derived from the Greek word soma, meaning “body”. Hence, all body cells of an organism – apart from the sperm and egg cells, the cells from which they arise (gametocytes) and undifferentiated stem cells – are somatic cells.


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Examples of somatic cells are cells of internal organs, skin, bones, blood and connective tissues. In comparison, the somatic cells contain a full set of chromosomes whereas the reproductive cells contain only half.


Word origin: Gk sōmatikós of = pertaining to the body.
Synonym: body cells.
Compare: sex cells.


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Re: Knockout mice

"Does this imply that all the somatic cells in the mice contain 1 copy of the functional gene and 1 copy of the non-functional gene? " ...

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by jonmoulton
Wed Feb 06, 2013 3:51 pm
 
Forum: Genetics
Topic: Knockout mice
Replies: 5
Views: 674

Knockout mice

Thanks for your response! Does this imply that all the somatic cells in the mice contain 1 copy of the functional gene and 1 copy of the non-functional gene? Would ...

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by cassieconte
Tue Feb 05, 2013 8:08 pm
 
Forum: Genetics
Topic: Knockout mice
Replies: 5
Views: 674

Females heterozygous for X linked diseases

I know that female mammalians randomly inactivate one X chromosome in somatic cells.So, if a human female was daltonism carrier, would not she be half daltonic?Because, ...

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by kysa
Fri Jan 04, 2013 5:04 pm
 
Forum: Genetics
Topic: Females heterozygous for X linked diseases
Replies: 1
Views: 387

Stem Cells/Differentiation

Adult stem cells Also known as progenitor cells or somatic stem cells, adult stem cells are located, in small quantities, throughout the body and generate specialized ...

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by MarkHolland
Wed Dec 05, 2012 7:29 am
 
Forum: Cell Biology
Topic: Stem Cells/Differentiation
Replies: 3
Views: 1103

how many dna molecules in a cell? are they all the same?

... more? You said "There are 46 different copies of DNA in human somatic cells", I'm wondering if these 46 different copies of DNA have different base sequence, ...

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by julianawhite
Tue Oct 30, 2012 8:01 am
 
Forum: Cell Biology
Topic: how many dna molecules in a cell? are they all the same?
Replies: 5
Views: 1131
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