Question

Write a short note on (a) uses of twin studies (b) relation between genetics and intelligence

Answer 1

Twin study
Twin studies are studies conducted on identical or fraternal twins. They aim to reveal the importance of environmental and genetic influences for traits, phenotypes, and disorders. 

Relation between genetics and intelligence
The study of the genetic basis of intelligence is one of the most controversial areas in human genetics. Researchers generally agree that mental abilities are genetically transmitted to some extent, but there is disagreement over the relative roles of genes and environment in the development of mental abilities. There is also disagreement over whether different mental abilities are products of a single ability known as intelligence, as well as disagreement over how to measure intelligence.