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Another insect, a scale insect, has an even more bizarre genetic parasite. When its eggs are fertilized. sometimes more than one sperm penetrates the egg. If this happens, one of the sperm fuses with the egg's nucleus in the normal way; the spare sperm hang around and begin dividing as the egg divides. When the…
The study looked at the average pregnancy term, breast-feeding length and brain size of 128 species of mammals. They saw that between different species brain size at birth was determined by the length of pregnancy, while the brain growth after birth was determined by breast-feeding duration. [...] The extreme length…
"In this world, pregnancy is considered news, and it is a nine-month news cycle," the editor-in-chief of Star magazine has said. Issues featuring pregnant celebrities are often among the magazines' best sellers. The mother of all celebrity pregnancies, of course, was that of actress Demi Moore, who appeared naked and…