New work from UC Davis and the University of Utah shows how the 3D structure of DNA inside a germ cell commits it to develop ...

Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. These reproductive cells are ...

When ejaculation takes place inside the vagina, the sperm swim through the cervix into the uterus. If an egg is waiting, they might fertilise it and when that happens, the cells begin to divide ...