Moderate

A character determined by three alleles is:

Correct answer: C. Human blood group

  • A. Human skin color
  • B. Human eye color
  • C. Human blood group
  • D. Human Rh factor

Explanation

ABO blood group is first discovered in multiple allelic blood group systems in man. This blood group system is encoded by a single polymorphic gene I on chromosome 9. It has three multiple alleles IA, IB, and i

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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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