A Hypothetical Condition in Some Domesticated Fowl Is Identified Phenotypically

question 34

Multiple Choice

A hypothetical condition in some domesticated fowl is identified phenotypically by patchy loss of feathers on the animals' backs. Although several factors, genetic and environmental, are found to be involved, only about 3% of any population with any of these factors are found with feather loss. Which of the following is a likely cause?

• A) continuous variation
• B) high number of alleles in one of the genes
• C) low mutation frequency
• D) threshold of liability
• E) high number of environmental effects

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Definitions:

Obedience

The act of following orders or directions from an authority figure, often without questioning them.

Experimenter

An experimenter is a researcher who conducts experiments, which are structured investigations designed to test hypotheses and understand causal relationships in scientific studies.

Pessimistic

A tendency to see the worst aspect of things or believe that the worst will happen.

Abilities

The skills and competencies that enable an individual to perform specific tasks or activities.