The likelihood of a child having polydactyly who has a normal father and a mother with polydactyly. Introduction: Alteration of the nucleotide sequence either by insertion, deletion, or substitution in the DNA is known as mutation. Certain dominant mutations cause inherited human disorders. The presence of two copies of these dominant mutations in a single child can be lethal. Polydactyly is a mutation which causes symptoms like extra fingers, or toes.

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Chapter 25, Problem 1Q

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To determine: The likelihood of a child having polydactyly who has a normal father and a mother with polydactyly.

Introduction: Alteration of the nucleotide sequence either by insertion, deletion, or substitution in the DNA is known as mutation. Certain dominant mutations cause inherited human disorders. The presence of two copies of these dominant mutations in a single child can be lethal. Polydactyly is a mutation which causes symptoms like extra fingers, or toes.

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