science museum

Studying genes and behaviour

To look for genes that influence behaviour, scientists study people with a particular characteristic. For example, to look for genes affecting alcoholism, scientists study families with several alcoholics. They also compare the frequency of certain gene variants in alcoholics with non-alcoholics. To investigate the influences of genes and environment, scientists often compare behaviour in identical and non-identical twins.

Scientists study twins to investigate the influences of genes and environment.
Scientists study twins to investigate the influences of genes and environment.
Corbis

Science Museum Home Page Who am I? Science Museum Home Page