Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Genetic predispositions refer to inherited characteristics or traits that individuals are more likely to have due to their genetic makeup. These traits may increase the likelihood of certain behaviors or conditions but do not guarantee them.
Genotype refers to an individual's complete set of genes inherited from their parents. It determines the potential range of traits that an individual can express.
Heritability is a statistical estimate that measures how much variation in a specific trait within a population is due to genetic differences between individuals rather than environmental influences.
Twin studies involve comparing similarities between identical twins (who share 100% of their genes) and fraternal twins (who share about 50% of their genes) to determine the relative contribution of genetics versus environment for specific traits or behaviors.