Britannica AI Icon

Quick Summary

Teratogenesis refers to the production of developmental malformations in an embryo or fetus. This field of study, known as teratology, investigates all aspects of abnormal generation and development. The incidence of birth defects is significant, with about one in 14 infants surviving the neonatal period exhibiting some form of abnormality, and half of these having multiple malformations.12

Causes of teratogenesis can be hereditary, such as gene mutations, or environmental, including exposure to certain chemicals, drugs like thalidomide, alcohol, and infections. The developing embryo is most vulnerable during the first trimester, with exposure to teratogens potentially leading to growth restriction, functional abnormalities, structural defects, miscarriage, or fetal death. Organogenesis, the formation of organs, occurs at specific times, and exposure during these critical periods can result in malformations of particular organs.23

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.