X chromosome

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The 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


Amount of gene surplus determines severity of mental retardation in males

Medicine & Health / Genetics

created Dec 10, 2009 | popularity 5 / 5 (1) | comments 0

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; ...





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New gene findings will help guide treatment in infant leukemia

Medicine & Health / Cancer

created Dec 05, 2009 | popularity not rated yet | comments 0

Pediatric oncologists have identified specific genes, dubbed partner genes, that fuse with another gene to drive an often-fatal form of leukemia in infants. By more accurately defining specific partner genes, researchers ...


Genetic studies reveal new causes of severe obesity in childhood

Medicine & Health / Genetics

created Dec 06, 2009 | popularity 5 / 5 (2) | comments 1

Scientists in Cambridge have discovered that the loss of a key segment of DNA can lead to severe childhood obesity. This is the first study to show that this kind of genetic alteration can cause obesity. The results are published ...


Drug shows promise for T315I-mutated chronic myeloid leukemia

Medicine & Health / Cancer

created Dec 07, 2009 | popularity not rated yet | comments 0

Results from a phase II clinical trial indicate a novel drug may provide a treatment option for chronic myeloid leukemia (CML) patients who do not respond to current therapies, researchers from The University of Texas M. ...


Researchers prove key cancer theory

Medicine & Health / Cancer

created Dec 07, 2009 | popularity not rated yet | comments 0

Mayo Clinic researchers have proven the longstanding theory that changes in the number of whole chromosomes -- called aneuploidy -- can cause cancer by eliminating tumor suppressor genes. Their findings, which appear in the ...


The battle of the sexes

Ovaries must suppress their inner male

Biology / Biotechnology

created Dec 10, 2009 | popularity 4.7 / 5 (9) | comments 0

For an ovary to remain an ovary, the female organ has to continuously suppress its inner capacity to become male. That's the conclusion of a study in the December 11th issue of the journal Cell revealing that t ...


Second-line CML drugs evoke faster response than front-line therapy

Medicine & Health / Cancer

created Dec 07, 2009 | popularity not rated yet | comments 0

Two medications approved as treatment for drug-resistant chronic myeloid leukemia continue to provide patients with quicker, better responses as a first treatment than the existing front-line drug, researchers at The University ...


New approach to sickle-cell disease shows promise in mice

Medicine & Health / Diseases

created Dec 07, 2009 | popularity not rated yet | comments 0

A new genetic approach to treating sickle cell disease is showing promising results in mice, report researchers from Children's Hospital Boston. By inactivating a gene they previously discovered to be important in the laboratory, ...


New molecule identified in DNA damage response

New molecule identified in DNA damage response

Biology / Cell & Microbiology

created Dec 08, 2009 | popularity 5 / 5 (2) | comments 0

(PhysOrg.com) -- Evolution places the highest premium on reproduction, natural selection’s only standard for biological success. In the case of replicating cells, life spares no expense to ensure that the ...


Introns: A mystery renewed

Introns: A mystery renewed

Biology / Cell & Microbiology

created Dec 10, 2009 | popularity 4.8 / 5 (5) | comments 0

The sequences of nonsense DNA that interrupt genes could be far more important to the evolution of genomes than previously thought, according to a recent Science report by Indiana University Bloomington and ...



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