Suppose two men could be the father of a child. Before doing an expensive paternity test, the geneticist involved in the case decides to ask about the blood-type of all individuals. However, Man 2. refuses to provide a blood sample. Given the following blood-types, could you still determine the paternity of the child and why? [4 pt] Mother: A-type Man 1: АB-type Child: O-type Man 2: (unknown)

Human Biology (MindTap Course List)
11th Edition
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cecie Starr, Beverly McMillan
Chapter19: Introduction To Genetics
Section: Chapter Questions
Problem 6CT: The ABO blood system has been used to settle cases of disputed paternity. Suppose, as a geneticist,...
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Suppose two men could be the father of a child. Before doing an expensive paternity test, the geneticist involved in the case decides to ask about the
blood-type of all individuals. However, Man 2. refuses to provide a blood sample. Given the following blood-types, could you still determine the paternity of
the child and why? [4 pt]
Mother:
A-type
Man 1:
АB-ype
Child:
O-type
Man 2:
(unknown)
No. Since O is dominant to A and B, the mother's contribution of an O allele could determine the child's O phenotype, regardless of the father.
No. Since O is recessive to A and B, the child could have received an O from Man 1 or Man 2, in order to generate an O phenotype in the child.
Yes. The only way for the child to be O-type would be if he received an O allele from Man 2 and an O allele from the Mother.
Yes. The only way for the child to be O-type would be if he received an O allele from Man 1, which was likely being masked by the other dominant
alleles.
Transcribed Image Text:Suppose two men could be the father of a child. Before doing an expensive paternity test, the geneticist involved in the case decides to ask about the blood-type of all individuals. However, Man 2. refuses to provide a blood sample. Given the following blood-types, could you still determine the paternity of the child and why? [4 pt] Mother: A-type Man 1: АB-ype Child: O-type Man 2: (unknown) No. Since O is dominant to A and B, the mother's contribution of an O allele could determine the child's O phenotype, regardless of the father. No. Since O is recessive to A and B, the child could have received an O from Man 1 or Man 2, in order to generate an O phenotype in the child. Yes. The only way for the child to be O-type would be if he received an O allele from Man 2 and an O allele from the Mother. Yes. The only way for the child to be O-type would be if he received an O allele from Man 1, which was likely being masked by the other dominant alleles.
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