Genetics & Personality

Question 1

Phenotypic Variance:

Answer 1

Observed individual differences (height, eye colour, or traits measured in Big Five)

Question 2

Genotypic Varience:

Answer 2

Individual differences in total collection of genes in each person (unobserved)

Question 3

Heritability:

Answer 3

Proportion of observed varience in a group that is accounted for by genetic variation.

Question 4

Methods of investigation:

Answer 4

1. Selective breeding
2. Family studies
3. Twin studies
4. Adoption studies
5. Molecular genetics

Question 5

Genotype-environment correlation:

Answer 5

Environment experienced by an individual may not be random but related to their genes

Question 6

Genotype-environment interaction:

Answer 6

Same environment, different responses because of different genotypes (collection of genes)
E.g. Effects of study environment

Question 7

Environmental modulation of gene expression:

Answer 7

Aspects of the environment affecting the expression of genes, leading to the creation of different kinds of proteins, ultimately leading to different functions.