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.

The female reproductive system includes organs that produce hormones like estrogen and progesterone. Ovaries release one mature egg each month during ovulation. Fallopian tubes transport the egg from ...

Sexual reproduction involves the joining of two sex cells (gametes) – the sperm (male gamete) and the egg/ovum (female gamete) to make a baby. Fertilisation is the fusion of a haploid sperm nucleus ...

As of October 3 rd, 2022, the COVID-19 pandemic has led to more than 615 million cases of severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2), along with over 6.5 million deaths globally, ...