X-linked recessive trait is:
Correct answer: C. Hemophilia
- A. Hypophosphatemia
- B. Vitamin-D resistant rickets
- C. Hemophilia
- D. Diabetes Mellitus
Explanation
Hemophilia: This option is the correct answer. Hemophilia is an X-linked recessive disorder characterized by impaired blood clotting due to a deficiency in clotting factors, particularly factor VIII (hemophilia A) or factor IX (hemophilia B). It primarily affects males, as the gene responsible for the condition is located on the X chromosome.
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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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