Humans have X-linked recessive traits like:
Correct answer: A. Hemophilia
- A. Hemophilia
- B. Vitamin D resistant rickets
- C. Hypophosphatemic rickets
- D. SRY gene
Explanation
The gene for hemophilia is located on X-chromosome and it is a recessive trait. However, vitamin D resistant rickets also called as hypophophatemic rickets is controlled by a dominant allele located on X-chromosome. SRY gene is located on short arm of Y-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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