biological approach- genetic basis in behaviour

Question 1

what are the 6 AO1 points you must know for the genetic basis in behaviour

Answer 1

-Genetic influence on behaviour
-Heritability of traits
- Twin studies
- Adoption studies
- Role of specific genes
-Evolutionary explanation of behaviour

Question 2

How does the biological approach explain behaviour?

Answer 2

Behaviour has a genetic basis, with genetic factors contributing to traits like personality, intelligence, and mental health.

Question 3

What is heritability in relation to behaviour?

Answer 3

Heritability refers to the proportion of variation in traits like aggression or mental disorders that can be attributed to genetic differences.

Question 4

How do twin studies investigate genetic influence on behaviour?

Answer 4

MZ twins share 100% of their genes, and DZ twins share 50%. Higher concordance in MZ twins suggests a genetic influence on behaviour.

Question 5

How do adoption studies contribute to understanding genetics in behaviour?

Answer 5

If adopted children resemble their biological parents more than their adoptive parents, it supports the idea that genetics influence behaviour.

Question 6

What are candidate genes?

Answer 6

Candidate genes are identified as being linked to specific behaviours, e.g., MAOA gene linked to aggression, COMT gene linked to schizophrenia.

Question 7

How does evolutionary theory explain genetic influence on behaviour?

Answer 7

Genetic inheritance shapes behaviours beneficial for survival and reproduction, e.g., aggression evolved for resource protection.