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| 1. |
Due to nondisjunction of chromosomes during spermatogenesis, sperms carry both sex chromosomes (22A XY) and some sperms do not carry any sex chromosome (22A O).If these sperms fertilize normal eggs (22A X), what types of genetic disorders appear among the offsprings? |
| A. | Down’s syndrome and Klinefelter’s syndrome |
| B. | Turner’s syndrome and Klinefelter’s syndrome |
| C. | Down’s syndrome and Cri-du-chat syndrome |
| D. | Down’s syndrome and Turner’s syndrome |
| Answer» C. Down’s syndrome and Cri-du-chat syndrome | |