A Phenotypically Normal Woman Marries a Man with CMT Disease,an

question 29

Multiple Choice

A phenotypically normal woman marries a man with CMT disease,an autosomal dominant disorder.They have a son who has CMT disease.How did the son get it?

• A) The mother had at least one dominant allele, which she passed on to her son.
• B) The father had at least one dominant allele, which he passed on to his son.
• C) The mother had one recessive and one dominant allele, one of which she passed on to his son.
• D) The father had two recessive alleles, one of which he passed on to his son.
• E) None of the above.

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Definitions:

Serotonin-related Genetic Allele

Refers to a variant of a gene influencing the neurotransmitter serotonin, affecting mood and behavior.

Depression

An ongoing psychological issue involving constant feelings of sadness or a disinterest in usual activities, leading to major disruptions in daily functioning.

Genome-wide Association Studies

Research efforts aimed at identifying the genetic variants associated with various diseases by scanning the genomes of many individuals.

Molecular Genetics

The field of biology that studies the structure and function of genes at a molecular level.