A case of disputed paternity involves a woman, Miss X, two men, Smith and Jones, and five children. We have the following information about their blood groups (phenotypes): Adults Blood groups Children Blood groups Miss X A MN Tom AB N Smith AB MN Dick B MN Jones B N Harry O M John O N Janet AB M Can you exclude any of the children being fathered by Smith? Note: The ABO and the MN blood groups are under control of a single locus on chromosome 9 and 4, respectively. The ABO system is determined by three alleles, A, B and O (recessive). The MN system by two alleles M and N. a. All children could be Smith’s b. Harry and John c. Harry, John, and Dick d. None of the children could be Smith’s
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A case of disputed paternity involves a woman, Miss X, two men, Smith and Jones, and five children. We have the following information about their blood groups (
phenotypes ):Adults Blood groups Children Blood groups
Miss X A MN Tom AB N
Smith AB MN Dick B MN
Jones B N Harry O M
John O N
Janet AB M
Can you exclude any of the children being fathered by Smith?
Note: The ABO and the MN blood groups are under control of a single locus on chromosome 9 and 4, respectively. The ABO system is determined by three alleles, A, B and O (recessive). The MN system by two alleles M and N.
a. All children could be Smith’s
b. Harry and John
c. Harry, John, and Dick
d. None of the children could be Smith’s
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