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NEETZoologyPrinciples of Inheritance and Variation

A woman with blood group O and normal vision, whose father was colorblind, marries a man with blood group AB and normal vision. What is the probability that they will have a colorblind son with blood group B?

Options

  1. A1 8
  2. B1 4
  3. C1 16
  4. DZero

Correct answer

A. 1 8

Step-by-step solution

The traits for ABO blood grouping and color blindness are inherited independently. First, determine the genotypes of the parents: The woman has blood group O, so her genotype for this trait is ii . She has normal vision but her father was colorblind ( X^c Y ), meaning she inherited the X^c allele from him. Thus, her genotype for color blindness is X^C X^c (carrier). The man has blood group AB, so his genotype is I^A I^B . He has normal vision, so his genotype is X^C Y . Now, calculate the probabilities for each tra

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