Related topics: genes , y chromosome
X chromosome
hideThe X chromosome is one of the two sex-determining chromosomes in many animal species, including mammals (the other is the Y chromosome). It is a part of the XY sex-determination system and X0 sex-determination system. The X chromosome was named for its unique properties by early researchers, and this resulted in its counterpart being named the Y chromosome for the next letter in the alphabet when it was discovered later.
For more information about X chromosome, read the full article at
Wikipedia.
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News tagged with x chromosome
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 ...
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 ...
Getting down to cancer basics
Mar 29, 2009 |
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Researchers have identified a new cancer gene - one that is common to many cancers and affects the most basic regulation of our genes. The new example - a gene on the X chromosome called UTX - is found in 10% of cases of ...
Researchers discover mechanism that prevents two species from reproducing
Oct 26, 2009 |
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Cornell researchers have discovered a genetic mechanism in fruit flies that prevents two closely related species from reproducing, a finding that offers clues to how species evolve.
Genetic conflict in fish led to evolution of new sex chromosomes
Oct 01, 2009 |
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University of Maryland biologists have genetically mapped the sex chromosomes of several species of cichlid (pronounced "sick-lid") fish from Lake Malawi, East Africa, and identified a mechanism by which new ...
Rett Syndrome scientist makes significant discovery
Feb 23, 2009 |
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A paper published online today in Nature Neuroscience reveals the presence of methyl CpG binding protein 2 (MeCP2) in glia. MeCP2 is a protein associated with a variety of neurological disorders, including Rett Syndrome, the mo ...
Nine new X chromosome genes associated with learning disabilities
Apr 19, 2009 |
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(PhysOrg.com) -- A collaboration between more than 70 researchers across the globe has uncovered nine new genes on the X chromosome that, when knocked-out, lead to learning disabilities. The international ...
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 ...
What makes a cow a cow? Complete bovine genome sequenced
Apr 23, 2009 |
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Researchers report today in the journal Science that they have sequenced the bovine genome, for the first time revealing the genetic features that distinguish cattle from humans and other mammals.
The importance of grandmothers in the lives of their grandchildren
Oct 29, 2009 |
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(PhysOrg.com) -- It is widely believed that women live long post-reproductive lives to help care for their grandchildren. According to the "Grandmother Hypothesis," post-menopausal women can increase their ...
Researcher offers hope for male diabetes sufferers
Jul 20, 2009 |
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(PhysOrg.com) -- Scientists at Glasgow have made a significant discovery in the study of a rare form of diabetes which predominantly affects men.
New study rewrites textbook on key genetic phenomenon
Jul 01, 2009 |
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Because females carry two copies of the X chromosome to males' one X and one Y, they harbor a potentially toxic double dose of the over 1000 genes that reside on the X chromosome.
Amount of gene surplus determines severity of mental retardation in males
Dec 10, 2009 |
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Researchers have discovered a new explanation for differences in the severity of mental illness in males. The more excess copies of a certain gene, the more serious the handicap. The genetic defect is situated on the X-chromosome; ...
Zoo volunteers help explain mysteries of the genome
Sep 07, 2009 |
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As we approache the 25th anniversary of the discovery of DNA fingerprinting (September 10), University of Leicester geneticists interested in a particular type of DNA are receiving some help from an unusual ...
Not only the gene itself, its abnormal regulation can also trigger short stature
Aug 25, 2009 |
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A specific gene is particularly frequently involved in the development of short stature. Researchers in Heidelberg have now discovered that sequences of genetic material on the X and Y chromosome that regulate this gene are ...
