A Researcher Tracks the Escape Behavior of a Population of Squirrels

question 10

Multiple Choice

A researcher tracks the escape behavior of a population of squirrels on campus across two generations. When she plots the escape behavior of the offspring generation against the parental behavior, she notes that the offspring's behavior exactly matches the parental behavior. Nonetheless, the narrow-sense heritability equals zero. How can the heritability equal zero in this example?

• A) The additive genetic variance equals one.
• B) All the escape behavior alleles are fixed in the population.
• C) Phenotypes vary widely between generations.
• D) Escape behavior is controlled by a rare recessive allele.

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Definitions:

Uncontrollable Shocks

Events or occurrences that are unexpected and beyond one's control, often causing stress or trauma.

Low-Intensity

Activities or exercises that require minimal physical effort, typically characterized by a low heart rate and minimal sweating, focusing on sustainability over a longer duration.

Vulnerable To Ulcers

A condition or predisposition where an individual is more likely to develop ulcers, often due to stress, lifestyle, or specific biological factors.

Delay Gratification

The ability to resist immediate temptations in order to achieve long-term goals, evidenced as a predictor of success in various aspects of life.