Question

Children’s ABO blood types are dependent on their biological parents’. ABO blood type; each parent provides...

Children’s ABO blood types are dependent on their biological parents’. ABO blood type; each parent provides one allele from which a fetus from its ABO blood type. Here is a list of all possible alleles received and their corresponding ABO blood type.

Alleles

AA

AO

AB

BB

BO

OO

Blood type

A

A

AB

B

B

O

If two babies were born to a couple with AO for one parent and AB for the other, what is the probability that this child’s ABO blood type is

  1. A for both children
  2. A for one child but B for the other child
  3. A for one child but AB for the other child
  4. B for both children
  5. AB for both children

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