News tagged with xy chromosome
Human sperm created from embryonic stem cells (Update)
Jul 08, 2009 |
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(PhysOrg.com) -- Human sperm have been created using embryonic stem cells for the first time in a scientific development which will lead researchers to a better understanding of the causes of infertility.
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Researchers to perform sex change operation on papaya
Nov 02, 2009 |
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The complicated sex life of the papaya is about to get even more interesting, thanks to a $3.1 million grant from the National Science Foundation. The grant will fund basic research on the papaya sex chromosomes ...
Genes from the father facilitate the formation of new species
Biology /
Oct 05, 2007 |
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The two closely related bird species, the collared flycatcher and the pied flycatcher, can reproduce with each other, but the females are more strongly attracted to a male of their own species. This has been shown by an ...
Probing Question: Do sisters share a closer genetic proximity than other siblings?
Sep 06, 2007 |
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If '70s pop star Marie Osmond had a sister, would she have been closer to her than her six singing brothers are to each other? While Osmond may have had more in common with a fictional sister in the makeup and hairstyle department, ...
Scientists demonstrate role of protein in distinguishing chromosome ends from DNA breaks
Sep 17, 2009 |
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The Stowers Institute's Baumann Lab has demonstrated how human cells protect chromosome ends from misguided repairs that can lead to cancer. The work, published in The EMBO Journal, a publication of the European Molecular Biolog ...
The story of X -- evolution of a sex chromosome
Apr 16, 2009 |
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(PhysOrg.com) -- Move over, Y chromosome - it's time X got some attention. In the first evolutionary study of the chromosome associated with being female, University of California, Berkeley, biologist Doris ...
How chromosomes meet in the dark -- Switch that turns on X chromosome matchmaking
Biology /
Dec 27, 2008 |
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A research group lead by scientists at the University of Warwick has discovered the trigger that pulls together X chromosomes in female cells at a crucial stage of embryo development. Their discovery could also provide new ...
When someone is raised female and the genes say XY
Sep 12, 2009 |
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(AP) -- It's the birth defect people don't talk about. A baby is born not completely male or female. The old term was hermaphrodite, then intersex. Now it's called "disorders of sexual development." Sometimes the person ...
Male sex chromosome losing genes by rapid evolution, study reveals
Jul 17, 2009 |
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Scientists have long suspected that the sex chromosome that only males carry is deteriorating and could disappear entirely within a few million years, but until now, no one has understood the evolutionary ...
Sex Talk Revelations of the Lonely Y Chromosome
Sep 09, 2009 |
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(PhysOrg.com) -- In the week that the University of Leicester celebrates the 25th anniversary of the discovery of DNA fingerprinting (Thursday September 10) new findings from the world-renowned University of Leicester Department ...
'Achilles' heel' in Y chromosome linked to sex disorders
Sep 03, 2009 |
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The unique mechanism behind the evolutionary survival of the human Y chromosome may also be responsible for a range of sex disorders, from failed sperm production to sex reversal to Turner Syndrome.
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