For a Quantitative Trait, the Total Variance of the Population

question 11

Multiple Choice

For a quantitative trait, the total variance of the population is due to which of the following?

• A) The amount of variance due to genetic factors only
• B) The amount of variance due to environmental factors only
• C) The difference between the variance attributed to genetic and environmental factors
• D) The sum of the genetic and environmental variances

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Definitions:

Prefrontal Cortex

The front part of the frontal lobe of the brain, involved in complex behaviors such as planning, decision making, and moderating social behavior.

Hippocampus

A critical region of the brain involved in memory formation and spatial navigation.

Hypothalamus

A region of the brain below the thalamus that coordinates both the autonomic nervous system and the activity of the pituitary, controlling body temperature, thirst, hunger, and other homeostatic systems.

Amygdala

A region of the brain involved in processing emotions, especially fear and pleasure.