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Latest Sexual differentiation Stories

2010-10-28 12:12:16

People love to speculate about differences between the sexes, and neuroscience has brought a new technology to this pastime. Brain imaging studies are published at a great rate, and some report sex differences in brain structure or patterns of neural activity. But we should be skeptical about reports of brain differences between the sexes, writes psychological scientist Cordelia Fine in Current Directions in Psychological Science, a journal of the Association for Psychological Science. The...

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2009-12-10 14:01:35

EMBL scientists uncover the gene responsible for keeping females female Is it a boy or a girl? Expecting parents may be accustomed to this question, but contrary to what they may think, the answer doesn't depend solely on their child's sex chromosomes. Scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany and the Medical Research Council's National Institute for Medical Research (NIMR) at Mill Hill, UK discovered that if a specific gene located on a non-sex...

2009-11-16 13:31:52

A study of 145 preschool children reports, for the first time, that when the concentrations of two common phthalates in mothers' prenatal urine are elevated their sons are less likely to play with male-typical toys and games, such as trucks and play fighting. The University of Rochester Medical Center-led study is published in the International Journal of Andrology. Because testosterone produces the masculine brain, researchers are concerned that fetal exposure to anti-androgens such as...

2009-10-23 14:20:43

Prenatal sex-based biological differences extend to genetic expression in cerebral cortices. The differences in question are probably associated with later divergences in how our brains develop. This is shown by a new study by Uppsala University researchers Elena Jazin and Björn Reinius, which has been published in the latest issue of the journal Molecular Psychiatry. Professor Elena Jazin and doctoral student Björn Reinius at the Department of Physiology and Developmental Biology...

2009-10-02 09:09:47

It's often said that overly macho males suffer from "too much testosterone." But a new study in mice reveals how estrogen might share in that blame. The report in the October 2nd issue of Cell, a Cell Press publication, reveals how early estrogen exposure "masculinizes" the brain circuitry, predisposing boys to be boys as it were. That early event is specifically critical in producing male mice that will pick fights with other males and that dutifully mark their territories with urine. "It's...

2009-07-16 10:40:00

Congress is expected to take up legislation this summer aimed at improving the nation's healthcare system. Whatever the shape of the final bill, it will have at least some impact on one of the three leading causes of death in the U.S.: stroke.Stroke typically occurs when arteries become blocked, preventing blood from flowing to the brain. When the brain is deprived of blood and oxygen, brain cells die and long-term brain damage results. For this reason, a stroke is also known as a brain...

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...

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2008-10-27 08:20:00

Could a gene linked with testosterone impact the occurrence of male transsexuals? Australian scientists say yes, according to new research. Research Vincent Harley said, "There is a social stigma that transsexualism is simply a lifestyle choice, however our findings support a biological basis of how gender identity develops."DNA analysis from 112 male-to-female transsexual volunteers showed they were more likely to have a longer version of the androgen receptor gene; a genetic difference that...

2008-06-17 15:01:05

By DUDDING, Adam Is the torrent of new books on the differences between male and female brains simply sexism in disguise? Adam Dudding reports. ---- ---------------- IN 1873, a Harvard professor by the name of Edward Clarke wrote a bestselling book called Sex in Education, in which he called on the latest scientific research to prove excessive intellectual labour exposed young girls to ghastly ailments of the ovaries and uterus, not to mention hysteria and neuralgia. American girls, Clarke...

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2007-06-27 00:10:00

By Lisa Martin DALLAS - A few years ago, at the urging of his wife, Greg Johnson scheduled the first checkup of his adult life. "I didn't even have a doctor," says the 49-year-old Corinth, Texas, businessman, who describes himself as a weekend athlete. When test results came back, the physician recommended Johnson follow up with a gastrointestinal specialist. But two months later, upon realizing that the appointment would conflict with his surfing trip to Costa Rica, Johnson canceled it and...


Word of the Day
mundungus
  • A stinking tobacco.
  • Offal; waste animal product; organic matter unfit for consumption.
This word comes from the Spanish 'mondongo,' tripe, entrails.