When providing genetic counseling, the nurse explains that the observable clinical expression of genetic coding is called:
A) phenotype.
B) genotype.
C) variable expressivity.
D) reduced penetrance.
A) phenotype.
Explanation: A) Genotype is the actual genetic code in a person, whereas phenotype is the clinical expression related to the genotype.
B) Genotype is the actual genetic code in a person, whereas phenotype is the clinical expression related to the genotype.
C) The clinical phenotype in individuals with mutations in the same gene can be different. This is called variable expressivity. Reduced penetrance means that not everyone who inherits a mutation will have clinical symptoms.
D) The clinical phenotype in individuals with mutations in the same gene can be different. This is called variable expressivity. Reduced penetrance means that not everyone who inherits a mutation will have clinical symptoms.
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