Concept explainers
a.
To determine: The affected parent for the given genetic disorder.
Introduction: Genetic disorders are caused due to abnormalities that occur in one or more genes. These abnormalities can be due to changes in the number or structure of the chromosome.
b.
To determine: The parent who is a carrier for the given genetic disorder.
Introduction: Autosomal dominant disorders can occur both in homozygous and heterozygous conditions while autosomal recessive disorder can occur only in homozygous condition. A carrier consists of a defective allele responsible for an autosomal recessive disorder.
c.
To determine: The parent who is asymptomatic for the given genetic disorder.
Introduction: A homozygote has both identical alleles in the genotype while the alleles present in a heterozygote are non-identical. It has one dominant and one recessive allele. A carrier consists of a defective allele responsible for an autosomal recessive disorder.
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