NEET2017Botany-Genetics
NEET 2017 Botany Chromosomal Disorders MCQ Question
Type: MCQ-conceptual-Medium-Class 12
A disease caused by an autosomal primary non-disjunction is
A
Down syndrome
B
Klinefelter syndrome
C
Turner syndrome
D
Sickle cell anemia
Correct Answer
Option A
Detailed Explanation
Down syndrome is caused by trisomy of chromosome 21 due to nondisjunction during meiosis.
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