The chromosomal abnormality in Down syndrome is: MCQ with Answer and Explanation

The chromosomal abnormality in Down syndrome is:
A. Trisomy 21
B. Trisomy 18
C. Monosomy X
D. Monosomy 21
Answer: Option A
Solution (By JKExamLibrary)
Down syndrome, the most common chromosomal aneuploidy, is caused by an extra copy of chromosome 21 (trisomy 21), usually from nondisjunction during meiosis. It is characterized by intellectual disability, distinct facial features, and increased risk of certain medical conditions. Monosomy X is Turner syndrome.

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Identify the correct statement about glycolysis:
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Correct Answer: Option C


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Correct Answer: Option D


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Correct Answer: Option B


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