ABO blood group system is due to:
Correct answer: C. Multiple allelism
- A. Multifactor inheritance
- B. Incomplete dominance
- C. Multiple allelism
- D. Epistasis
Explanation
The correct option is c) Multiple allelism. The ABO blood group system is determined by multiple allelism. The ABO system involves three alleles: A, B, and O. These alleles determine the presence or absence of specific antigens (A or B) on the surface of red blood cells. Each individual inherits two alleles, one from each parent, resulting in different combinations of alleles and different blood types.
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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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