Which of the following statements is true regarding diversity in the phenotypic expression of genetic disorders?
A) Environmental factors, such as the degree to which one has a supportive environment, impact upon the phenotypical expression of the genotype.
B) Environmental factors play little or no role in the phenotypical expression of genetic disorders.
C) Environmental factors impact upon all types of genetic disorders equally.
D) Environmental factors can prevent the onset of a disorder, but cannot modify the severity and symptoms of a disorder.
Correct Answer:
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