If a Trait Is Inherited in an Autosomal Recessive Fashion

question 26

Multiple Choice

If a trait is inherited in an autosomal recessive fashion, which of the following is not true?

• A) Both sexes are equally affected.
• B) The trait will not occur in offspring if one of the parents is homozygous dominant.
• C) About one-fourth of the offspring of two heterozygotes will be affected.
• D) The trait often appears in the progeny of unaffected parents.
• E) Two affected individuals can have an unaffected child.

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Definitions:

Alternative Hypothesis

A hypothesis that contradicts the null hypothesis, proposing a new effect or relationship.

Null Hypothesis

A standard assumption that posits no meaningful difference or impact exists, usually examined in contrast with a contrasting hypothesis during statistical evaluation.

Two-sided

Pertaining to tests or intervals in statistics that consider both directions or sides of a distribution, typically involving a range of values both above and below a certain point.

Population Mean

The average of a set of properties, characteristics, or values in a population.