Quantcast
Last updated on April 18, 2014 at 15:44 EDT

Latest Y chromosome Stories

2008-12-24 09:57:08

Anyone who has watched crime dramas on TV knows that forensic scientists can use DNA "profiling" to identify people from evidence gathered at a crime scene, establish a paternity link or help free an innocent person who has been wrongly jailed. A lesser known but rapidly growing application of DNA profiling is tracing a person's paternal ancestry"”a process known as genetic genealogy. The laboratories performing this testing often differ in their results, making data comparison between...

2008-11-13 18:00:07

A gene essential to growth and development of most organ systems is also vital to female, but not male, embryonic sexual development, U.S. researchers say. Researchers at the University of Illinois and the University of Texas say the findings lend support to a controversial hypothesis about mammalian sexual development. In terms of their sexual organs, all embryos look alike, study leader Humphrey Yao, of the University of Illinois said. "They have a common primordium, the foundation...

b290c54d9fbafb820386ef2f84f337ac1
2008-10-08 11:10:00

Scientists at the university where DNA fingerprinting originated have developed a new technique that shows men with the same surname are highly likely to be genetically linked. DNA fingerprinting was first introduced at Leicester University in 1984. Now, researchers at the university have demonstrated a new leap in developments that could help law enforcement agencies determine the surname of a male suspect or the victim of a crime. Genealogy researchers as well as crime scene investigators...

2008-09-24 21:00:30

Counting the copies of a specific gene in cells from a urine sample may provide a simple, non-invasive way to detect bladder cancer, U.S. researchers said. Researchers at The University of Texas M.D. Anderson Cancer Center in Houston said when the telltale gene, Aurora kinase A, is numerous and overexpressed in urothelial cells, errors during cell division follow. The new cells have too few or too many chromosomes, instead of the normal pairs of 23 chromosomes. "Abnormal chromosome counts...

2008-07-21 08:44:52

GeneTree, a DNA-enabled family history-sharing networking Web site designed to help people understand where their personal histories belong within the greater human genetic story, today added a Y-chromosome DNA testing option allowing participants to search for paternal line ancestors in the world's largest and most diverse genetic genealogy databases. Providing a Y-DNA testing service along with its existing mitochondrial DNA testing means GeneTree participants can now conveniently research...

4b2d7fef438bc74d9cac44baabb2ca751
2008-06-20 00:50:00

Consumer DNA tests are being used by male adoptees to predict the surnames of their biological fathers. Adoptees are using the fact that men who share the same surname often have genetic similarities. By checking DNA databases for males sharing a genetic make-up similar to their own, adoptees can see if these men also share a surname. This process can provide the possible last name of the adoptee's biological father. The genetic similarities between men who share surnames occur in the Y...

acfb907cfd58119eaa9dfae2759644601
2008-01-09 14:41:44

DURHAM, N.C. -- Fungi don't exactly come in boy and girl varieties, but they do have sex differences. In fact, a new finding from Duke University Medical Center shows that some of the earliest evolved forms of fungus contain clues to how the sexes evolved in higher animals, including that distant cousin of fungus, the human. A team lead by Joseph Heitman, M.D. has isolated sex-determining genes from one of the oldest known types of fungi, Phycomyces blakesleeanus, findings which appear in...

2006-01-17 10:35:00

By Siobhan Kennedy DUBLIN -- Scientists in Ireland may have found the country's most fertile male, with more than 3 million men worldwide among his offspring. The scientists, from Trinity College Dublin, have discovered that as many as one in twelve Irish men could be descended from Niall of the Nine Hostages, a 5th-century warlord who was head of the most powerful dynasty in ancient Ireland. His genetic legacy is almost as impressive as Genghis Khan, the Mongol emperor who conquered...

2005-12-16 10:00:00

Please read headline as "Longer conceptions" instead of "Longer pregnancies." LONDON (Reuters) - Women who take more than a year to conceive are more likely to have a baby boy, according to research published on Friday. Scientists at Maastricht University in the Netherlands, who studied data on 5,283 women who had babies between July 2001-2003, found that the probability of having a boy was 58 percent if it took longer than 12 months to get pregnant. The findings did not apply to...

2005-12-15 22:45:00

LONDON -- Women who take more than a year to conceive are more likely to have a baby boy, according to research published on Friday. Scientists at Maastricht University in the Netherlands, who studied data on 5,283 women who had babies between July 2001-2003, found that the probability of having a boy was 58 percent if it took longer than 12 months to get pregnant. The findings did not apply to women having fertility treatment. "Taking longer to reach lasting pregnancy increases the chances...