Probability of which of the following is extremely rare?
Correct answer: D. Affected female in hemophilia
- A. Carrier female in hemophilia
- B. Affected males in hemophilia
- C. Carrier male in hemophilia
- D. Affected female in hemophilia
Explanation
Extremely rare. To have hemophilia as a female, she must inherit the hemophilia gene from both parents. Since females have two X chromosomes, the chances of receiving two X chromosomes carrying the hemophilia gene are statistically unlikely, making affected females with hemophilia extremely rare.
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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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