In contrast, each egg cell, or ovum, is relatively large and non-motile. During fertilization, a spermatozoon and ovum unite to form a new diploid organism.

Every guy whose sperm has fertilized an egg and then it didn’t become ... sperm unites with a female gamete or oocyte (ovum) to form a single cell called a zygote. This highly specialized ...

Female: At birth, a girl's pair of ovaries contain up to 1,000,000 follicles, which are hollow balls of cells, each with an immature egg (or ovum ... the uterus without fertilization by a sperm ...

The female gamete is called an ovum or egg. The plural is ova. Ova are produced from germline cells in the ovaries. Ovaries contain immature ova at various stages of development. Each ova is ...

Sexual reproduction involves the joining of two sex cells or gametes – the sperm (male gamete) and the egg or ovum (female gamete). The male and female reproductive system The male reproductive ...

One of the common causes of a miscarriage is an anembryonic pregnancy, or blighted ovum in which the gestational ... in the division of the sperm or egg cells and are usually not inherited from ...