Answer:
Cultural diffusion is the spread of cultural beliefs and social activities from one group of people to another. Through cultural diffusion, horizons are broadened and people become more culturally rich.
Explanation:
These studies are designed to determine the effect of both environment and genetics on human behaviour. The study of human behaviour has always focused on the question of whether nature or nurture play the most important role in the development of human personality and behaviour. Studying biological or adopted siblings and twins can help scientists assess the impact of genes and experience on behavioural phenotypes.
I believe the term you’re looking for it tribe.