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A simpler way to manipulate the sex of offspring has been developed by scientists. Most cells from male mammals contain both an X and a Y chromosome, but during sperm development spermatogenesis they are segregated into Hq sex Reigate cells.

This means an individual sperm will carry either one or the other, with an X chromosome giving rise to daughters and a Y chromosome to sons. Researchers say that unlike the Y chromosome, which carries very few genes, the X chromosome carries many, some of which remain active in Poole sex dolls maturing sperm.

This provides a theoretical basis for distinguishing sed two, the research published in the journal PLOS Biology sets. Professor Masayuki Shimada, said: The study was performed in mice, but the technique is likely to be widely applicable to other mammals as.

Eighteen of the X chromosome genes encoded receptors, and were good candidates for manipulating the sperm because of their response to stimuli.

Researchers focused on a pair of receptors and found that a chemical that bound to them slowed sperm motility without impairing either fertilisation ability or viability. They showed the effect was due to impaired energy production within the sperm and could be reversed by removal of the chemical.

Scientists say that while other procedures that can be used to separate X and Y sperm, they are cumbersome, expensive, and risk damaging the DNA of the sez. However, to date, the mechanism by which it does this is poorly understood.

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Scientists develop simple way to manipulate sex of offspring. Scientists develop simple way to manipulate sex of offspring By Press Association By clicking on "Proceed" below, I discharge all internet providers, owners and Reifate of Friday-Ad of any responsibility regarding the content and the usage of the content in this "Adult" category.

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Students' sports ban over sex harassment claims · The University of Surrey. One student is expelled. Distinctive gene activity by the two sex chromosomes allows X-bearing sperm Free calls to Edinburgh online be slowed down, researchers say.

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