Male and female reproductive systems allow human reproduction. Fertilisation occurs when a sperm and egg join to form an embryo. An embryo develops into an unborn baby in the uterus during pregnancy.

All-female animal groups including the Amazon molly fish, Komodo dragon and hammerhead shark.

Scientists are making inroads in understanding one of the central mysteries of human reproduction: Why do women’s eggs deteriorate as they age? The broad strokes have been well-known — the ticking of ...

Reproduction involves making quality gametes – egg and sperm – which are essential for species continuity and therefore have huge implications for human health. The quality of the gametes is not only ...

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Reproduction permanently alters females' bones in ways not previously known, a team of anthropologists has found. Its discovery, based on an analysis of primates, sheds new light on how giving birth ...

An Asian water dragon hatched from an egg at the Smithsonian National Zoo, and her keepers were shocked. Why? Her mother had never been with a male water dragon. Through genetic testing, zoo ...

Ultrasonic tracking in Hiroshima Bay shows that male and female black sea bream move differently during the spawning season, ...

If you liked this story, share it with other people. Successful conservation interventions have helped mountain gorilla populations recover from 620 in 1989 to more than 1,000 today. However, mountain ...

Dolphins have active sex lives, with frequent dalliances not just for reproduction. One reason may be that the prominent female dolphin clitoris provides sexual pleasure. The findings suggest that the ...