Genetics
Meiosis produces eggs and sperm with 23 chromosomes each. Errors during this division create aneuploid eggs or sperm. In eggs, meiosis begins before birth and is only completed decades later, which is thought to be why error rates rise with age.
Also known as: cell division
Sources
- Royal Australian and New Zealand College of Obstetricians and Gynaecologists (ranzcog.edu.au)
- Royal College of Pathologists of Australasia (rcpa.edu.au)
Last reviewed: 10 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.