A child with genotype XYY is known to have:
Correct answer: D. Super male syndrome
- A. Down syndrome
- B. Klinefelter's syndrome
- C. Turner's syndrome
- D. Super male syndrome
Explanation
XYY males (47 chromosomes) are taller, may have mild learning difficulties, but usually fertile. This condition is called super male syndrome.
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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