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Questions and Answers
A group A male mates with a group B female. What is the probability of their offspring having blood type AB?
A group A male mates with a group B female. What is the probability of their offspring having blood type AB?
In a mating between a group A male and a group B female, if an offspring exhibits a group O phenotype, what can we conclude about the parents' genotypes?
In a mating between a group A male and a group B female, if an offspring exhibits a group O phenotype, what can we conclude about the parents' genotypes?
Consider a mating between a group A male and a group B female. Which of the following offspring genotypes is NOT possible?
Consider a mating between a group A male and a group B female. Which of the following offspring genotypes is NOT possible?
Which of the following statements correctly describes the inheritance of the ABO blood groups?
Which of the following statements correctly describes the inheritance of the ABO blood groups?
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What does it mean for the O gene to be considered 'silent' or 'amorphic'?
What does it mean for the O gene to be considered 'silent' or 'amorphic'?
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In the mating of an AO male with a BO female, how many different ABO blood group phenotypes can their offspring potentially have?
In the mating of an AO male with a BO female, how many different ABO blood group phenotypes can their offspring potentially have?
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If a child has an AB blood type, what must the genotypes of their parents be?
If a child has an AB blood type, what must the genotypes of their parents be?
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A woman with blood type O gives birth to a child with blood type A. What is the father's possible genotype?
A woman with blood type O gives birth to a child with blood type A. What is the father's possible genotype?
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Why is it necessary for individuals to have two ABO genes?
Why is it necessary for individuals to have two ABO genes?
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In a group A male, what is the probability of having an AO genotype?
In a group A male, what is the probability of having an AO genotype?
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Flashcards
ABO blood groups inheritance
ABO blood groups inheritance
ABO blood groups are inherited from allelic genes (A, B, O).
Allelic genes
Allelic genes
Three genes (A, B, O) that determine blood group characteristics.
Silent O gene
Silent O gene
The O gene is considered silent and does not produce an antigen.
Possible ABO genotypes
Possible ABO genotypes
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Mating of A and B groups
Mating of A and B groups
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Genotype vs Phenotype
Genotype vs Phenotype
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Heterozygous children
Heterozygous children
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Parent genotype influence
Parent genotype influence
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O group child in A x B mating
O group child in A x B mating
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ABO typing
ABO typing
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Study Notes
ABO Blood Group Inheritance
- Epstein and Ottenberg proposed ABO blood groups as inherited traits in 1908.
- Bernstein, in 1924, theorized three allelic genes (A, B, O) for ABO blood groups.
- Individuals inherit one gene from each parent. These genes determine the ABO antigen on erythrocytes.
- The O gene is silent (amorphic), not producing an antigen.
- Each individual has two chromosomes, each carrying either A, B, or O. Possible genotypes are AA, AO, BB, BO, AB, and OO.
- ABO typing categorizes people into four groups: A, B, O, and AB. AB phenotype can result from the AB genotype.
- A male with group A and a female with group B can have four possible genotype combinations in their offspring: AA with BB; AA with BO; AO with BB; AO with BO.
- These matings can produce children with all four ABO blood groups.
- A group O child in an A x B mating implies the O gene is present in both parents.
- Any A or B children from these specific matings are heterozygous (AO or BO).
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Description
Test your knowledge on the inheritance patterns of ABO blood groups, a topic first proposed by Epstein and Ottenberg in 1908. Understand the concepts of alleles and genotypes, and discover how these factors influence ABO categorization. This quiz covers various combinations and their implications on offspring blood types.
