Imagine That Behavioural Geneticists Have Found a Way to Measure

question 47

Multiple Choice

Imagine that behavioural geneticists have found a way to measure the characteristic of "punctuality." The correlation between twin pairs is .75 for monozygotic twins and .30 for dizygotic twins.Based on this information, what would a behavioural geneticist conclude about the influence of genes and environment on this trait?

• A)It is strongly influenced by the environment because the heritability coefficient is nearly 1.00.
• B)It is strongly influenced by genetics because the heritability coefficient is nearly 1.00.
• C)It is mildly influenced by genetics because the heritability coefficient is nearly 0.45.
• D)It is mildly influenced by the environment because the heritability coefficient is nearly 0.45.

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