Recessive Alleles Seem to Vanish in Some Generations and Reappear

question 18

Multiple Choice

Recessive alleles seem to vanish in some generations and reappear in later generations because

• A)they cannot be expressed in males.
• B)they are masked by a dominant allele.
• C)they cannot be expressed in females.
• D)they cannot be expressed in successive generations.
• E)they are lost by mutation.

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Definitions:

Sample Size

The number of observations or data points that are selected from a larger population for the purpose of statistical analysis.

Sample Proportion

The ratio of members in a sample that have a particular attribute to the total number of members in that sample.

Test Statistic

A value calculated from sample data during a hypothesis test that determines whether to reject the null hypothesis.

Approximately Normal

Describes data that roughly follows a normal distribution, though it may not perfectly fit the normal curve.