A Variable That Has Two Distinct Levels That Are Coded

question 55

Multiple Choice

A variable that has two distinct levels that are coded as either zero or one is called a(n) ____.

• A)regression variable
• B)dummy variable
• C)MANOVA variable
• D)ANOVA variable

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Definitions:

Bottleneck

A sudden decrease in a population size caused by adverse environmental factors; may result in genetic drift; also called genetic bottleneck or population bottleneck.

Directional Selection

A type of natural selection that favors one extreme phenotype over another, causing the allele frequency to shift in one direction.

Disruptive Selection

A form of natural selection where extreme values for a trait are favored over intermediate values, potentially leading to the evolution of distinct forms within a population.

Stabilizing Selection

A type of natural selection that favors the average individuals in a population, reducing variation around the mean phenotype.