When sperm meets egg, the start of life is not quiet. Under a special microscope, researchers have watched a tiny light show at fertilization. They see a microscopic flash at fertilization, a burst of ...

Up to now, it has been thought that which sperm are put into the ovum at the time of fertilization is random, and it has been thought that the egg is only waiting passively for the sperm to come, but ...

How a sperm and an egg fuse together has long been a mystery. New research by scientists in Austria provides tantalizing clues, showing fertilization works like a lock and key across the animal ...

Conception and pregnancy are complicated processes that depend on many factors, including the production of hardy sperm, healthy eggs, unblocked fallopian tubes that allow the sperm to reach the egg, ...