Your Parents Are Both Heterozygous for the Recessive Disorder Phenylketonuria

question 5

Multiple Choice

Your parents are both heterozygous for the recessive disorder phenylketonuria (PKU) . What is the probability that you will have the disorder?

• A) 25%
• B) 50%
• C) 75%
• D) 100%
• E) 25% if your three siblings are healthy; 75% if your siblings also have the disorder

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Definitions:

Population Size

The total number of individuals within a defined area at a given time, important in understanding ecology and evolutionary biology.

Increase Or Decrease

Terms that indicate a change in magnitude, quantity, or degree, either going up (increase) or going down (decrease).

Dispersal Patterns

The way in which organisms move or spread from their point of origin to other areas, affecting population dynamics and ecosystem structure.

Clumped Dispersion

The spatial distribution pattern of a population in which individuals are more concentrated in specific parts of the habitat. Also called aggregated distribution and patchiness. Compare with random dispersion and uniform dispersion.