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 ...

In vitro fertilization, or IVF, is one of several medical procedures people can undergo to help them build a family. It also is one of the most expensive. On average, a single IVF cycle costs between ...

This is a preview. Log in through your library . Abstract Sperm competition is a powerful selective force that has shaped sexual traits throughout animal evolution. Yet, how fertilization mode (i.e.