First Sex Chromosome Gene Connected to Meiosis and Male Sterility
	Just having a XY sex chromosome formula won't make you a man. Nor the XX formula makes you a woman. Increasing evidence shows that human sex is not caused by sex chromosomes, but by genes placed on those chromosomes. Over 50 genes involved in sex expression have been found so far. 7 operate in the brain even before the gonads are formed. Now add a new one: a team at the University of Pennsylvania has detected a gene, TEX11, ... [read more >>]
	15 March 2008, 04:53GMT | (c) 2008 Softpedia

No More Men for Reproduction: Sperm from Female Cells!
	One day, man's job in the family may be just to cut the lawn and change the light bulb when necessary. This is because researches like this one made at the University of Newcastle could put them out of the reproductive business. The team led by Professor Karim Nayernia has now created spermatogonia (the cells from which sperm cells come, in other words, proto-sperms), starting with human female bone marrow cells! Previously, the t ... [read more >>]
	01 February 2008, 05:52GMT | (c) 2008 Softpedia

The Gene of Male Infertility Finally Found
	It's easy to blame it on the woman, but in 15 % of cases, the guilt can be attributed to the stud. Now Cornell study could bring more hope for these couples, as a research team detected a gene mutation that induces male infertility in mice. This is the first dominant mutation found to specifically trigger infertility in a mammal and the researchers can now investigate similar mutations in infertile men. "If you ... [read more >>]
	11 April 2007, 04:18GMT | (c) 2008 Softpedia