Genetics Problem Sets Worksheet With Answer Key Page 6
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14a. Which child belongs to the Browns?
Which child belongs to the Smiths?
b. Give the genotype of everybody involved.
4. A man with blood type A is suing his wife for divorce on the grounds of infidelity. Their
first and second child, whom they both claim, have blood types O and AB respectively. The
third child, who the man disclaims, has blood type B.
a. Can this information be used to support his case?
b. The third child's blood was tested for the M-N blood group system. The child's blood
was group M. The man is group N. Can this be used to support his case? Refer to the
information on previous page in the human blood type section.
5. A man with blood type B is being sued for paternity by a woman with blood type A. The
child the woman claims he fathered has blood type O.
a. Respond to the question "Is the man the father of the child?"
b. If this man is the father of the child, what are the genotypes of the parents?
c. If this man's blood type were AB, could he be the child's father? Explain.
Genetics Problems
6
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