Assuming that blood type is not a sex-linked trait, what is the probability that a mother with genotype "A/O" and a father with genotype "A/B" will have a child with type B blood?
Correct answer: B. 25%
- A. 50%
- B. 25%
- C. 75%
- D. 0%
Explanation
The parental gametes would be A, O, A and B. The possible combinations can be AO, AA, AB, BO. So the probability of having B type is ¼ which equals to 25%.
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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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