News tagged with sex chromosomes

Related topics: genes

Selfish gene may undermine genome police

(Medical Xpress)—For a bunch of inanimate chemical compounds, the nucleic and amino acids caught up in the infamous "selfish" segregation distorter (SD) saga have put on quite a soap opera for biologists ...

Mar 05, 2013
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An embryo that is neither male nor female

So, is it a girl or a boy? This is the first question parents ask at the birth of an infant. Though the answer is obvious, the mechanism of sex determination is much less so. Researchers at the University of Geneva (UNIGE) ...

Jan 03, 2013
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DNA findings hold potential for cancert treatment

(Medical Xpress)—Six years ago, Boise State University biology professor Greg Hampikian and computer science colleague Tim Andersen announced that they had identified tiny DNA and protein sequences that were absent in nature. ...

Oct 09, 2012
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Gene link to higher rates of bowel cancer in men

(Medical Xpress) -- Scientists have shown for the first time that one of the sex chromosomes is involved in the development of a cancer that can afflict both genders, according to a Cancer Research UK-funded ...

Jun 01, 2012
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Sex-determination system

A sex-determination system is a biological system that determines the development of sexual characteristics in an organism. Most sexual organisms have two sexes. In many cases, sex determination is genetic: males and females have different alleles or even different genes that specify their sexual morphology. In animals, this is often accompanied by chromosomal differences. In other cases, sex is determined by environmental variables (such as temperature) or social variables (the size of an organism relative to other members of its population). The details of some sex-determination systems are not yet fully understood.

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