The locus that controls ABO blood type in humans resides on chromosome 9. Three alleles, IA, IB, and i determine the blood type A, B, and O, respectively. The inheritance pattern of ABO blood type is illustrated in this table.
Blood type
Genotype
A
IAi; IAIA
AO; AA
B
IBi; IBIB
BO; BB
AB
IAIB
AB
O
ii
OO
A father has type A blood, while a mother has type AB blood. Which of the following is true about the blood type of their child?
The probability that their child has type A blood is 50%.
The probability that their child has type B blood is 50%.
The probability that their child has type A blood is 25%.
The probability that their child has type B blood is 6.25%.
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The locus that controls ABO blood type in humans resides on chromosome 9. Three alleles, IA, IB, and...
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