If Someone Who Is Heterozygous for (Or a Carrier Of)

question 34

Multiple Choice

If someone who is heterozygous for (or a carrier of) a recessive genetic disease has a child with another heterozygous carrier, what are the chances that their child will have (come down with) the disease? (Make an inheritance diagram on scratch paper if it will help you to think this through.)

• A) none in four (0%)
• B) one in four (25%)
• C) two in four (50%)
• D) three in four (75%)
• E) four in four (100%)

---

Definitions:

Incentives

Incentives are rewards or motives that encourage individuals to perform specific actions or behaviors.

WNBA

The Women's National Basketball Association, a professional basketball league in the United States for women.

Drive-reduction

A theory suggesting that psychological needs create an aroused state that drives an organism to reduce the need by engaging in some goal-directed behavior.

Physiological Need

A basic bodily requirement that is essential for maintaining life and health, such as the need for food, water, or sleep.