Quantitative Traits Are Controlled by Many Different Factors in the Environment

question 21

Multiple Choice

Quantitative traits are controlled by many different factors in the environment and in the genotype.This is the ___________ hypothesis.

• A) Multiple Factor Hypothesis
• B) Polygenic Factor Hypothesis
• C) Pleiotropic Factor Hypothesis
• D) Dominant Factor Hypothesis
• E) Majority Factor Hypothesis

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Definitions:

Age Structure

The number and proportion of people at each age in a population. Age structure diagrams represent the number of males and females at each age, from birth to death, in the population.

Iteroparous

Describes organisms that can reproduce multiple times over their lifetimes, as opposed to only once.

Invertebrates

Multicellular organisms that lack a vertebral column or backbone.

Density Dependent

Variables that have varying impacts on population growth or size, depending on how densely the population is distributed.