Question

humans have 22 pairs of autosomes when there are no nondisjunction errors in meiosis. which of the following is not a result of nondisjunction in autosomes? a) patau syndrome b) klinefelter’s syndrome c) edward’s syndrome d) down syndrome

Explanation:

To solve this, we analyze each option:

• Patau syndrome (trisomy 13), Edward’s syndrome (trisomy 18), and Down syndrome (trisomy 21) are all autosomal nondisjunction results (trisomies of autosomes).
• Klinefelter’s syndrome is a sex chromosome disorder (XXY), not an autosomal nondisjunction result.

Answer:

B) Klinefelter’s syndrome