Imagine That Behavioural Geneticists Have Found a Way to Measure

question 107

Multiple Choice

Imagine that behavioural geneticists have found a way to measure the characteristic of having a "sweet tooth." The correlation between twin pairs is .95 for identical twins and .90 for fraternal twins.Based on this information,what would a behavioural geneticist conclude about the influence of genes and environment on this trait?

• A) It is mildly influenced by genetics because the heritability coefficient is nearly 0.00.
• B) It is mildly influenced by the environment because the heritability coefficient is nearly 0.00.
• C) It is strongly influenced by genetics because the correlations are so high for both types of twins.
• D) It is influenced about equally by genetics and by the environment because the correlations are nearly identical for both types of twins.

---

Definitions:

Competitive Market

A market structure characterized by a large number of buyers and sellers, where no single party can dictate prices or terms of trade.

Government Antitrust

Regulatory actions and laws implemented by the government to promote competition and prevent monopolies and other practices that restrain trade.

Price Setting

The process by which a company decides on the selling price of its products or services.

Identical Products

Goods that are exactly the same in every feature and aspect, making them perfect substitutes for one another.