Assume That Connected Earlobes Are a Recessive Trait with 73

question 9

Multiple Choice

Assume that connected earlobes are a recessive trait with 73% penetrance.The parents are heterozygous and homozygous recessive for the attached earlobe gene.What is the probability that their first child will have attached earlobes?

• A)50%
• B)18.75%
• C)25%
• D)36.5%
• E)73%

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Definitions:

Critical Value

A critical value is a point on a statistical distribution that represents a cutoff used to determine the likelihood of observing a statistic as extreme as, or more extreme than, the observed value.

One-way ANOVA

A statistical test used to determine if there are statistically significant differences between the means of three or more independent (unrelated) groups based on one independent variable.

F-ratio

A statistical measure used in analysis of variance (ANOVA) to determine the degree of variation between sample means in comparison to variation within the samples.

Critical Value

A point on the test distribution that is compared to the test statistic to decide whether to reject the null hypothesis.