X chromosomes are very special genetic material. They differ in number between men and women. To achieve equality between sexes, one out of two X chromosomes in women is silenced. In flies, the opposite happens: in male flies, ...
Cell & Microbiology
Jul 25, 2013
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Painstaking new analysis of the genetic sequence of the X chromosome—long perceived as the "female" counterpart to the male-associated Y chromosome—reveals that large portions of the X have evolved to play a specialized ...
Biotechnology
Jul 21, 2013
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The Y chromosomes of cattle have more genes and are more active than the Y chromosomes of other primates, according to researchers.
Biotechnology
Jul 11, 2013
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In mammals, an individual's sex is determined by the chromosomes it inherits from its parents. Two X chromosomes lead to a female, whereas one X and one Y lead to a male. Y chromosomes are only passed from fathers to sons, ...
Plants & Animals
Apr 4, 2013
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(Phys.org) —Researchers at Temple University and the University of Delaware have published a study in the Journal of Biological Chemistry that sheds new light on the clotting effects of a drug that is being tested as a ...
Biochemistry
Apr 3, 2013
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(Phys.org) —Sex determining genes in marsupials have shed some light on how the Y chromosome, which determines the male sex in humans, will quickly degenerate and eventually disappear, according to a world-renowned evolutionary ...
Biotechnology
Apr 3, 2013
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It is well known that many mammals are able to adjust the ratio of male and female young depending on the surrounding conditions at the time of conception. A recent study in the group of Christine Aurich at the University ...
Plants & Animals
Dec 18, 2012
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(Phys.org)—In a paper published in the Nov. 21 issue of Cell, a team led by Mauro Calabrese, a postdoctoral fellow at the University of North Carolina in the lab of Terry Magnuson, chair of the department of genetics and ...
Cell & Microbiology
Nov 27, 2012
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Two new studies offer insight into sex chromosome evolution by focusing on papaya, a multimillion dollar crop plant with a sexual problem (as far as growers are concerned) and a complicated past. The findings are described ...
Biotechnology
Aug 6, 2012
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(Phys.org) -- Fruit flies are commonly used in genetics research because their lifespan is short, they are easy to breed in the laboratory, and mutants are widely available. There are about 1,500 known species. Now a new ...
