When a hemophiliac carrier woman marries a normal man, who among her offspring may be affected:
Correct answer: D. Half of her sons
- A. All her children
- B. All daughters
- C. Half of her daughter
- D. Half of her sons
Explanation
Since the woman is the carrier and the man is normal half of her sons will be hemophilic because they get the X gene from their mother and since one of the X genes of mother carries a hemophilia gene the one of their sons will be hemophilic.
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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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