Medically reviewed by Andrea L. Braden, MD The female reproductive system is the internal and external organs involved in ...

New research focuses on the mechanism that connects the two types of cells across ... how the sperm gets inside the egg once ...

The egg cell travels through the oviduct towards the uterus. If the egg cell does not meet with a sperm cell in the oviduct, the lining of the uterus begins to break down and the cycle repeats.

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 ...

It’s a new way to create “bi-paternal” mice that can survive to adulthood—but human applications are still a long way off.

Despite their singular purpose—fertilizing an egg—sperm are among the most diverse cell types on Earth. “Some have multiple hooks [while] some have multiple heads. . . . They have this huge amount of ...

A mouse with no biological mother has survived to adulthood in China – a major scientific achievement that's been years in the making. The feat was pulled off by a team of researchers in China, led by ...

It’s being labeled ‘Sausage Party meets Lord of the Rings’A new animated musical film has been released which tells ...

Dr Nandita Palshetkar, IVF expert and medical director, Bloom IVF, explains how certain behaviour can lead to poor quality of ...

Two weeks after a human egg is fertilized, primordial germ cells (PGCs), which develop into sperm and eggs, are formed. In six to 10 weeks after fertilization, PGCs differentiate into pro ...