Question

Due to non-disjunction of chromosomes during spermatogenesis, sperms carry both sex chromosomes (22A+XY) and some sperms do not carry any sex chromosome (22A+0). If these sperms fertilize normal eggs (22A+X), what types of genetic disorders appear among the offsprings?

• A. Turner's syndrome and Klinefelter's syndrome
• B. Down's syndrome and Klinefelter's syndrome
• C. Down's syndrome and Turner's syndrome
• D. Down's syndrome and cri-du-chat syndrome

Answer 1

The correct option is A Turner's syndrome and Klinefelter's syndrome

If sperms carry both sex chromosomes (22A +XY) and some sperms do not carry any sex chromosome (22A +0) and when fertilized with ovum with 22A +X; it will produce individuals with Klinefelter's syndrome (47, XXY) and Turner's syndrome (45, X).