A team of scientists at the Helmholtz Zentrum München shows changes in the immediate environment of DNA after the ovum and sperm fuse to form the zygote. The results suggest why all conceivable ...

The process of embryogenesis begins with an egg or ovum being fertilized by a sperm cell to form a zygote. The zygote is a single diploid cell, which will ultimately multiply through mitotic ...

During sexual reproduction, eggs from a female-functioning animal are fertilized by sperm from a male-functioning individual, creating a zygote. Egg and sperm each have one complement of ...

The egg, now fertilized and containing its new set of 23 pairs of chromosomes, is called a zygote. The genes that will influence hundreds of characteristics — ranging from biological sex to hair ...

Once an egg is released from the ovary during ovulation, it meets with a sperm cell that was carried to it via the semen. These two gametes combine to form a zygote and this process is called ...

Save guides, add subjects and pick up where you left off with your BBC account. Most animals carry out sexual reproduction. Sexual reproduction involves the joining of two sex cells or gametes ...

Then, in a flash, the sperm head passes into the egg, as if stepping through a door. Now the fused cell is a zygote and ready to grow into a new animal. In earlier research, scientists had found ...