The genotype of blood group 'AB' in humans is _.
Correct answer: A. IA IB
- A. IA IB
- B. IB Io
- C. IA IA
- D. IoIo
Explanation
ABO blood type in humans is determined by 3 alleles IA, IB (Dominant), and i (Recessive) Genotype IA shows blood group A. Genotype TB shows blood group B. Genotype Io shows blood group O. But, IA & IB are co-dominant alleles means neither of the dominant alleles can mask the expression of other dominant alleles. So, the genotype IA IB shows blood group AB.
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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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