The gene for ABO-blood group systems in humans is represented by symbol
Correct answer: B. I
- A. X
- B. I
- C. Y
- D. O
Explanation
The gene for ABO blood group systems is represented by I, with the three alleles being 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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