Disjunction of the 21st Chromosome That Can Lead to Down

question 45

Multiple Choice

 Disjunction of the 21st chromosome that can lead to Down syndrome has been found to be related in most cases to

• A) paternal age.
• B) maternal age.
• C) multiple codon repeats on the X chromosome.
• D) the inability to metabolize phenylalanine.

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Definitions:

Correlational Study

A research method that examines the relationship between two or more variables, determining how they might relate or predict each other without inferring a causal relationship.

Higher Income

An economic level that surpasses the average income threshold, indicating greater financial resources or earnings.

Third Variable Problem

A confounding issue in research where an unaccounted-for variable affects the outcome of the study, potentially misleading the relationship between the variables studied.

Naturalistic Observation

An investigative technique that involves watching participants in their unaltered surroundings without any intervention from the person observing.