The idea has no scientific merit, but researchers have now found a way to make it true in mice, sort of. The scientists incubated mouse sperm in a mixture containing molecules that would bind to the receptors and activate them. The molecules slowed energy production in X-chromosome sperm while not affecting the Y-chromosome sperm at all, the team reports today in PLOS Biology. To confirm their findings, the researchers staged sperm races. Many of the modified X sperm swam at less than half the speed of the Y sperm.
A British woman who left her wife in Canada for their sperm donor and allegedly abducted their child has been arrested after landing an inflatable rubber dinghy in the Channel Islands. Lauren Etchells, a teacher originally from South Shields, Tyneside, left Canada three years ago and is understood to have attempted to come ashore on Jersey with her parents. Both are safe. Reports citing police in British Columbia said that Ms Etchells, 33, and her parents, believed to be Brian and Angela Etchells, were arrested by the authorities on the crown dependency and held on suspected immigration offences. Police on the island confirmed that…. Get The International Pack for free for your first 30 days for unlimited Smartphone and Tablet access. Already a member?
The biotechnology of sex selection in animals is one of the most studied and also misunderstood in the history. According Garner and Seidel [ 1 ], Democratis — AC had suggested that the right testicle produces male sperm and the left female. For sure that is not true, once there are two sperm populations on the mammals ejaculate, being a portion of it carrier the X sexual chromosome and other Y.
In this research, it was examined that how long and how many sperm could be used by female guppies from bundles of spermatozoa at the absence of males. Two treatments were conducted with five replicates in ten aquariums. In the first group male fish were held with females until first birth of female fish, and then they were taken away and never put together till the end of the experiment 9 months. On the other hand, in the second experiment group all female and male fish were kept together over the experiment.