Imagine That a Researcher Is Constructing a Pedigree for a Trait

question 125

Multiple Choice

Imagine that a researcher is constructing a pedigree for a trait he expects to show recessive inheritance in humans. What are the likely characteristics of this trait?

• A)This trait may not occur within every generation of a family  it could be said to "skip" generations.
• B)The parents of children who have this trait may not themselves be affected.
• C)Both males and females within a given family can have this trait  it doesn't appear to be sex-specific.
• D)There may be instances of first-cousin mating in this pedigree, resulting in affected children.
• E)All of these choices are correct.

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Definitions:

Experimental Group

A group in a research study that receives the treatment or intervention under investigation to assess its effects compared to a control group.

Independent Variable

The variable in a scientific experiment that is manipulated or changed to observe its effect on the dependent variable.

Special Treatment

Exceptional or preferential handling or consideration given to individuals in a specific context.

Subjects

Participants or individuals under study in a research project.