A disease caused by an autosomal primary non-disjunction is:
- ADown's syndrome
- BKlinefelter's syndrome
- CTurner's syndrome
- DSickle cell anemia
Solution & Step-by-step Explanation
Down's syndrome is caused by the non-disjunction of the 21st pair of autosomes during gamete formation, resulting in trisomy 21 (47 chromosomes). Klinefelter's and Turner's involve sex chromosomes.