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Questions and Answers
Which of the following phenotypes would be impossible to observe in a family where the parents are A1 and B, IF all the children shared the same parents?
Which of the following phenotypes would be impossible to observe in a family where the parents are A1 and B, IF all the children shared the same parents?
- A1
- A2
- O (correct)
- A2B
A family has children with the phenotypes A1, A2, and A2B. Which of the following is a possible genotype for the father?
A family has children with the phenotypes A1, A2, and A2B. Which of the following is a possible genotype for the father?
- A1O (correct)
- A1A2
- A1A1
- A2A2
If a family has two children, one with the phenotype A1 and the other with the phenotype A2, which of the following is a possible genotype for the mother?
If a family has two children, one with the phenotype A1 and the other with the phenotype A2, which of the following is a possible genotype for the mother?
- A1A2 (correct)
- A1O
- A1A1
- A2A2
What is the probability that two parents with genotypes A1O and BO will have a child with the phenotype O?
What is the probability that two parents with genotypes A1O and BO will have a child with the phenotype O?
What does the text imply about the inheritance of blood groups?
What does the text imply about the inheritance of blood groups?
Flashcards
Phenotype
Phenotype
The observable traits or characteristics of an organism, resulting from the interaction of its genotype with the environment.
Genotype
Genotype
The genetic makeup of an organism; the actual alleles (A, B, O) inherited from the parents.
Al x B Mating
Al x B Mating
A genetic cross between two different blood types, Al and B, leading to various possible offspring phenotypes.
Possible Children Combinations
Possible Children Combinations
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Group O Child
Group O Child
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Study Notes
Parent Genotypes Deduced from Child Phenotypes
- Child phenotypes can reveal parental genotypes.
- For instance, in matings where one parent is Al and the other is B, children with phenotypes A2 and A2B will never appear alongside children with B or O phenotypes in the same family.
- This suggests that all six possible phenotypes (A1, A2, A2B, B, AB, O) can occur from Al x B matings.
- However, the presence of an O-type child in a family where other children are A2 and A2B would indicate different parents for the children.
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