Mr. X & Mrs. X have the same genotype, i.e., IAi for blood group. What is the expected probability of the blood group of their children?
Correct answer: B. Blood Group 'A'-0.75, Blood Group 'O'-0.25
- A. Blood Group 'A-1.00, Blood Group 'O'-0.00
- B. Blood Group 'A'-0.75, Blood Group 'O'-0.25
- C. Blood Group 'A-0.50, Blood Group 'O'-0.50
- D. Group 'A- 0.25, Blood Group 'O'-0.75
Explanation
The cross between I^A i and I^A i will produce 3 offsprings with blood group A and one offspring with blood group O. So the probability will be;Blood group 'A' = ¾ = 0.75Blood group 'O' = ¼ = 0.25.So, option B is correct.
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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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