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Multiple Alleles 12. The major blood groups in humans are determined by multiple alleles; that is there are more than two possible alleles, any one of which can occupy a locus. In this ABO blood group system, a single gene can exist in any of three aillelic forms: I^, ", or i. The alleles A and B code for production of antigen A and antigen B (two proteins) on the surface of red blood cells. Alleles A and B are codominant, while allele i is recessive. Four blood groups (phenotypes) are possible from combinations of these alleles (Table 1). TABLE 1 The ABO Blood Groups Blood Type Anitgens Present Antibody Present Genotype Neither A nor B A and B A A B A AB AB Neither A nor B a. Is it possible for a child with blood type O to be produced by two AB parents? - Explain - (yes or no) b. In a case of disputed paternity, the child is type O, the mother type A. Could an individual of the following blood types be the father?. - Ēxplain each possibility. A В AB

Multiple Alleles 12. The major blood groups in humans are determined by multiple alleles; that is there are more than two possible alleles, any one of which can occupy a locus. In this ABO blood group system, a single gene can exist in any of three aillelic forms: I^, ", or i. The alleles A and B code for production of antigen A and antigen B (two proteins) on the surface of red blood cells. Alleles A and B are codominant, while allele i is recessive. Four blood groups (phenotypes) are possible from combinations of these alleles (Table 1). TABLE 1 The ABO Blood Groups Blood Type Anitgens Present Antibody Present Genotype Neither A nor B A and B A A B A AB AB Neither A nor B a. Is it possible for a child with blood type O to be produced by two AB parents? - Explain - (yes or no) b. In a case of disputed paternity, the child is type O, the mother type A. Could an individual of the following blood types be the father?. - Ēxplain each possibility. A В AB

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Multiple Alleles 12. The major blood groups in humans are determined by multiple alleles; that is there are more than two possible alleles, any one of which can occupy a locus. In this ABO blood group system, a single gene can exist in any of three allelic forms: 14, #, or i. The alleles A and B code for production of antigen A and antigen B (two proteins) on the surface of red blood cells. Alleles A and B are codominant, while allele i is recessive. Four blood groups (phenotypes) are possible from combinations of these alleles (Table 1). TABLE 1 The ABO Blood Groups Blood Type Anitgens Present Antibody Present Genotype Neither A nor B A and B A A B MA or Ai B B A АВ АВ Neither A nor B a. Is it possible for a child with blood type O to be produced by two AB parents? Explain - (yes or no) b. In a case of disputed paternity, the child is type O, the mother type A. Could an individual of the following blood types be the father? Explain each possibility. A. В АВ
Transcribed Image Text:Multiple Alleles 12. The major blood groups in humans are determined by multiple alleles; that is there are more than two possible alleles, any one of which can occupy a locus. In this ABO blood group system, a single gene can exist in any of three allelic forms: 14, #, or i. The alleles A and B code for production of antigen A and antigen B (two proteins) on the surface of red blood cells. Alleles A and B are codominant, while allele i is recessive. Four blood groups (phenotypes) are possible from combinations of these alleles (Table 1). TABLE 1 The ABO Blood Groups Blood Type Anitgens Present Antibody Present Genotype Neither A nor B A and B A A B MA or Ai B B A АВ АВ Neither A nor B a. Is it possible for a child with blood type O to be produced by two AB parents? Explain - (yes or no) b. In a case of disputed paternity, the child is type O, the mother type A. Could an individual of the following blood types be the father? Explain each possibility. A. В АВ
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Blood type of the human is governed by multiple alleles and a single gene can exist in three allelic forms: a gene for blood group exist in IA, IB and i. 

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