Concept explainers
A.
To explain: The plausibility of the conclusion that the first born has a greater chance of inheriting the mutant allele based on Mendel’s laws.
Concept introduction: Pedigree analysis is an approach that is used to study about the inheritance of genes in humans. This approach is of great importance as it can be used to construct a pedigree based on a family history and also to evaluate the given information in the pedigree by applying the laws of inheritance (law of segregation, law of dominance, and the law of independent assortment).
B.
To explain: The probability of obtaining the gene by chance.
Concept introduction: Pedigree analysis is an approach that is used to study about the inheritance of genes in humans. This approach is of great importance as it can be used to construct a pedigree based on a family history and also to evaluate the given information in the pedigree by applying the laws of inheritance (law of segregation, law of dominance, and the law of independent assortment).
C.
To explain: The additional data required to test friend’s idea.
Concept introduction: Pedigree analysis is an approach that is used to study about the inheritance of genes in humans. This approach is of great importance as it can be used to construct a pedigree based on a family history and also to evaluate the given information in the pedigree by applying the laws of inheritance (law of segregation, law of dominance, and the law of independent assortment).
D.
To explain: The possibility of the friend’shypothesis being right.
Concept introduction: Pedigree analysis is an approach that is used to study about the inheritance of genes in humans. This approach is of great importance as it can be used to construct a pedigree based on a family history and also to evaluate the given information in the pedigree by applying the laws of inheritance (law of segregation, law of dominance, and the law of independent assortment).
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