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Latest X chromosome Stories

2014-06-17 13:41:26

University of Texas at Arlington A UT Arlington research team says their study of genetic information from more than 4,000 beetle species has yielded a new theory about why some species lose their Y chromosome and others, such as humans, hang on to it. They call it the "fragile Y hypothesis." The biologists' idea is that the fate of the Y chromosome is heavily influenced by how meiosis, or the production of sperm, works in an organism. They believe the size of an area where X and Y...

First Sex Determining Genes Appeared In Mammals Some 180 Million Years Ago
2014-04-24 03:55:04

Swiss Institute of Bioinformatics This news release is available in French and German. Man or woman? Male or female? In humans and other mammals, the difference between sexes depends on one single element of the genome: the Y chromosome. It is present only in males, where the two sexual chromosomes are X and Y, whereas women have two X chromosomes. Thus, the Y is ultimately responsible for all the morphological and physiological differences between males and females. But this has not...

2014-03-27 13:07:49

Results help explain puzzling features of 'dot chromosome' In previous research, UC Berkeley scientists Beatriz Vicoso, Ph.D., and Doris Bachtrog, Ph.D., determined that genes on the so-called "dot chromosome," or fourth chromosome, of the fruit fly Drosophilia melanogaster are X-linked in three other related fly species. These and other findings revealed that the fruit fly's "dot chromosome" had descended from a differentiated X chromosome and suggests that several of the chromosome's...

Calico Cats Inspire Research Into X Chromosome Inactivation
2014-02-19 04:31:40

April Flowers for redOrbit.com - Your Universe Online Calico cats are renowned and beloved for their funky orange and black patchwork or "tortoiseshell" fur. Cat Breeds Encyclopedia reports that these felines — considered to be good luck in several countries — are 90 percent female, suggesting that the color pattern is related to the gender of the animal. New research from the University of California San Francisco (UCSF), has further linked this unique color pattern to X chromosome...

Why Do Women And Men Differ In Height?
2014-02-07 12:41:01

University of Helsinki Researchers from the University of Helsinki analyzed thoroughly the commonly occurring genetic variation in chromosome X, one of the two sex-determining chromosomes, in almost 25,000 Northern European individuals with diverse health-related information available. The aim of the study was to find genetic factors that could explain individual differences in several traits, including BMI, height, blood pressure and lipid levels. In addition, the researchers also...

Y Chromosome Not Going To Disappear
2014-01-10 10:40:58

Brett Smith for redOrbit.com - Your Universe Online Finally, some good news for men, as a new study in PLOS Genetics has found that the human race may not be losing the Y chromosome after all. Some popular theories have posited that the male sex chromosome is destined to diminish and disappear. "The Y chromosome has lost 90 percent of the genes it once shared with the X chromosome, and some scientists have speculated that the Y chromosome will disappear in less than 5 million years,"...

2013-10-28 11:33:50

Genealogical and medical records of males in Utah's multi-generational families were analyzed An analysis of the genealogical and medical records of males in Utah's multi-generational families strongly supports the case that inherited variations in the Y chromosome, the male sex chromosome, play a role in the development of prostate cancer, according to a study presented today (Friday, Oct. 25) at the American Society of Human Genetics 2013 meeting in Boston. The study identified...

2013-10-18 13:25:21

Every case of cancer originates from changes in a person's genetic material (mutations). These usually occur as "somatic mutations" in individual cells during an individual's lifetime, rather than being inherited from a person's parents. "Over time, the original damaged cell accumulates additional mutations, and it is still largely unknown why," says Prof. Roland Eils, who leads bioinformatics departments both at DKFZ and Heidelberg University. By studying when and where mutations occur...

2013-10-04 23:23:25

A' Design Award and Competitions are happy to share that the work Chromosome X by Helen Brasinika became a winner of the prestigious Golden A' Design Award in Furniture, Decorative Items and Homeware Design Category. Como, Italy (PRWEB) October 04, 2013 A' Design Award and Competitions are happy to inform that the work Chromosome X by Helen Brasinika and Anastasia Rokkou has been honored with the prestigious Golden A' Design Award in Furniture, Decorative Items and Home...

2013-09-09 11:32:11

Discovery provides target to potentially halt the process, prevent cancers Biologists reported today in Nature that they have identified two pathways through which chromosomes are rearranged in mammalian cells. These types of changes are associated with some cancers and inherited disorders in people. "Our finding provides a target to prevent these rearrangements, so we could conceivably prevent cancer in some high-risk people," said senior author Edward P. (Paul) Hasty, D.V.M., of the...


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pungle
  • To take pains; labor assiduously with little progress.
This word comes from the Spanish 'pongale,' put it.
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