Psychology › Section C · Biopsychology › Topic C.1
Human genetics and behavior
Psychology's biggest question - why do people differ? - begins in a molecule. This topic covers the vocabulary of heredity (genes, alleles, dominant and recessive), the machinery that shuffles them, and the three ways the field thinks about how genes and environment combine to make a person.
In this topic
- Why psychology studies genetics
- A running example: sickle-cell disease
- Chromosomes, DNA, genes, alleles
- Genotype and phenotype; dominant and recessive
- Worked example: the Punnett square
- Mutation and the source of variation
- Three views of gene-environment interaction
- Worked example: schizophrenia - the interaction in evidence
- Genetic variation and behavioural traits
- Common mistakes to avoid
- Key takeaways
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