Who hasn't seen it before: the view through the microscope in which a sperm penetrates an egg cell and fertilizes it. This fundamental step in procreation happens dynamically and seemingly without ...

Human bodies have to be built from a single egg cell that's fertilized by a sperm cell. Many rounds of cell division occur as the body is developing, and it seems that there are plenty of chances for ...

A simplified model describing the mutual gamete activation during double fertilization in Arabidopsis. Before fertilization EC1 proteins accumulate in secretory vesicles of the egg cell (A). Likewise, ...