Moderate

Which of the following blood groups is not possible in a person whose father is of blood group O?

Correct answer: A. AB

  • A. AB
  • B. B
  • C. A
  • D. O

Explanation

Father O = ii can only pass i. AB requires one IA and one IB allele that is impossible if one parent contributes only 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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