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
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News tagged with x chromosome
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 ...
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 ...
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 ...
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.
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 ...
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 ...
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 ...
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.
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.
Boy or girl? In lizards, egg size matters
Jun 04, 2009 |
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Whether baby lizards will turn out to be male or female is a more complicated question than scientists would have ever guessed, according to a new report published online on June 4th in Current Biology. The study shows that f ...
Small RNAs can play critical roles in male infertility/contraception
Apr 09, 2009 |
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University of Nevada School of Medicine scientists in the Department of Physiology and Cell Biology have discovered insight into the reproductive workings of the male sex chromosome that may have significant ...
Gene linked to lupus might explain gender difference in disease risk
Mar 30, 2009 |
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In an international human genetic study, researchers at UT Southwestern Medical Center have identified a gene linked to the autoimmune disease lupus, and its location on the X chromosome might help explain why females are ...
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 ...
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 ...
Variants in gene on X chromosome associated with increased susceptibility to Alzheimer's
Jan 11, 2009 |
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Researchers at Mayo Clinic have discovered the first gender-linked susceptibility gene for late-onset Alzheimer's disease.
