Which of the Following Variables Causes Only the Outcome Variable

question 34

Multiple Choice

Which of the following variables causes only the outcome variable, but not the predictor variable?

• A) A common-causal variable
• B) An extraneous variable
• C) A mediating variable
• D) A third variable

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Definitions:

Intermediate Phenotype

A phenotype that exhibits a blend or mixture of characteristics between two extremes, often seen in incomplete dominance genetic scenarios.

Incomplete Dominance

A genetic phenomenon where neither allele of a gene fully dominates the other, resulting in a phenotype that is a blend or intermediate between the two parent alleles.

Codominance

A genetic scenario where two alleles of a gene are expressed equally in the phenotype of the organism.

Polygenic

Relating to or resulting from the influence of multiple genes, especially with regard to traits that exhibit a continuous distribution in the population.