Is It Possible for Two Parents with Achondroplasia to Have

question 14

Multiple Choice

Is it possible for two parents with achondroplasia to have a child who is of normal stature?

• A)Yes, because the disorder is autosomal dominant, and if both parents are heterozygous, the child could inherit two normal stature gene alleles.
• B)Yes, if the parent who is homozygous for the gene mutation demonstrates variable expressivity of the health problem.
• C)No, because the disorder is autosomal recessive, and the child can only inherit two mutated gene alleles for the health problem.
• D)No, because homozygosity for this health problem is lethal.

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Definitions:

Confounding Variables

Factors other than the independent variable that may cause a change in the dependent variable, potentially skewing results in an experiment.

Control Groups

In experiments, the groups that do not receive the experimental treatment and are used as a baseline to compare the effects of the treatment.

Treatment Groups

In experimental research, groups of participants receiving the intervention or treatment being tested, as opposed to control groups which receive no treatment or a placebo.

Experimental Research

A research method that investigates causal relationships by manipulating one variable to see its effect on another, under controlled conditions.