A Recessive Allele on the X Chromosome Is Responsible for Red-Green

question 18

Multiple Choice

A recessive allele on the X chromosome is responsible for red-green color blindness in humans. A woman with normal vision whose father is color blind marries a color-blind male. What is the probability that this couple's first son will be color blind?

• A) 1/4
• B) 1/2
• C) 2/3
• D) 3/4

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Definitions:

Skewed

A term describing asymmetry in the probability distribution of a real-valued random variable, indicating a deviation from the normal distribution.

Median

The middle value in a data set, which effectively divides the dataset into two halves, with one half having values above the median and the other half below.

Mean

The arithmetic average of a set of numbers, calculated by adding them together and dividing by the number of values.

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, indicating how much the values deviate from the mean.