CTRS Practice Exam 2026 – Complete Preparation Guide

Question: 1 / 400

Which of the following genetic syndromes is associated with intellectual disabilities?

Down Syndrome

Down Syndrome is a genetic condition caused by the presence of an extra chromosome 21, also known as trisomy 21. One of the hallmark characteristics of Down Syndrome is the presence of intellectual disabilities. Individuals with Down Syndrome may exhibit cognitive delays and varying degrees of intellectual disability, which can influence their learning, reasoning, and social skills.

In contrast, the other conditions listed—Huntington's Disease, Parkinson's Disease, and Alzheimer's Disease—are primarily neurodegenerative disorders that do not typically result from genetic syndromes associated with intellectual disability. While these conditions can affect cognitive function, they are not classified as genetic syndromes leading directly to intellectual disabilities from birth. Instead, they are more related to the degeneration of brain function over time, rather than a chromosomal anomaly present at birth like in Down Syndrome.

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Huntington's Disease

Parkinson's Disease

Alzheimer's Disease

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