← All posts tagged животные

lurker
животные попугаи понаехали в Лондон, местньім старперам не нравится
older respondents are far more hostile to the birds than younger ones, who mostly accept their presence, especially in London, their main stronghold. Comments varied from “very colourful and interesting to see”, to “a pain in the backside – so intrusively noisy”
lurker
животные немецкий таракан оказался не немецкий
the genomic analyses of over 280 specimens from 17 countries and six continents, show that this species evolved some 2,100 years ago from an outside species in Asia and were released this week in the Proceedings of the National Academy of Sciences journal.
lurker
животные
Multiple studies in the Northern Hemisphere show the sound of our voices evokes more terror than other apex predators and now new research in the Southern Hemisphere reaches the same conclusion.

Australian marsupials studied in Tasmania were at least 2.4 times more likely to flee from human voices than the sound of any other predator considered.

"Wildlife worldwide evidently recognize that it is humans who are the largest source of danger," University of Tasmania ecologist Katherine McGann and colleagues write in their paper.
lurker
животные
At several points in our tangled history, modern humans mated with Neanderthals. This has left a telltale signature in the genomes of modern humans today. However, there's one part of our genome that lacks any Neanderthal DNA: the Y chromosome. But why? Experts told Live Science that some of that could be chance. But it's also possible that genes from Neanderthal males were incompatible with the female Homo sapiens carrying them. That would mean only female hybrids were able to reproduce. For instance, the team discovered that three of the Neanderthal genes on the Y chromosome that differ from those found in humans function as part of the immune system. These genes allow the immune system to differentiate friend — aka the body's own cells — from foe. Failure to properly distinguish "self" from "invader" is why tissue transplants from men to women can be rejected or why a mother's immune system may attack a male fetus during pregnancy, causing miscarriage. It's therefore conceivable that the immune systems of modern women consistently attacked male babies who carried Neanderthal DNA on their Y chromosome, leading to recurrent miscarriages and eventually the loss of Neanderthal Y genes.