In humans, the polymorphic gene 'I' has three multiple alleles due to:
Correct answer: B. Mutation
- A. Complete dominance
- B. Mutation
- C. Sex linkage
- D. Gene linkage
Explanation
The ABO system arose from mutations in the "I" gene, producing IA , IB , and i alleles.
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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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