When Researchers Say That the Heritability of Intelligence Is 50%,they

question 41

Multiple Choice

When researchers say that the heritability of intelligence is 50%,they mean that

• A) about half of a person's intelligence is due to genetic factors.
• B) genetics and environment are equally important in determining intelligence.
• C) 50% of the variation in a population's IQ scores is due to genetics.
• D) half of the population lies within the normal range for intelligence.

---

Definitions:

Venule

A small blood vessel that allows deoxygenated blood to return from the capillary beds to the larger blood vessels called veins.

Superficial Palmar Arch

An arterial network located in the palm of the hand, responsible for supplying blood to the fingers and hand.

Brachial Artery

A major blood vessel of the upper arm that supplies blood to the arm and hand.

Common Carotid Artery

A major artery in the neck that supplies blood to the head and neck, dividing into the internal and external carotid arteries.