Two People (Both Heterozygotes) Are Able to Taste a Chemical

question 31

Multiple Choice

Two people (both heterozygotes) are able to taste a chemical substance called PTC. The ability to taste PTC is caused by a dominant allele (T) . The inability to taste PTC is caused by a recessive allele (t) . What proportion of their children would be expected not to be able to taste PTC?

• A) 3/4
• B) All
• C) 1/4
• D) 2/3
• E) none

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Definitions:

Significantly More

A statistical term indicating that an observed effect or difference is large enough that it is unlikely to have occurred by chance, based on a set significance level.

Independent Sample Variances

Variability measures of two or more independent samples, analyzed to understand difference across populations.

F Distribution

A probability distribution that arises in the analysis of variance tests, used to calculate and interpret the ratio of variances to determine statistical significance.

Null Hypothesis

A statement used in statistics that proposes there is no significant difference or effect and that any observed differences are due to chance.