The most common chromosomal abnormality linked to intellectual disability is ________.

Name: The most common chromosomal abnormality linked to intellectual disability is ________.
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Down syndrome, also known as trisomy 21, is the most common chromosomal abnormality linked to intellectual disability. It occurs when there is an extra copy of chromosome 21. This leads to developmental delays, intellectual disability, and other physical characteristics such as a flat facial profile and short stature.

The Most Common Chromosomal Abnormality Linked to Intellectual Disability Is