Which of the following is TRUE of incomplete penetrance?
A)Environmental factors do not influence penetrance.
B)Incomplete penetrance implies that some individuals will experience less severe forms of disease such as cancer or Alzheimer's.
C)Gene interactions have been shown to result in incomplete penetrance in some cases.
D)Incomplete penetrance refers to cases in which individuals developing a particular disease (e.g., cancer or Alzheimer's)lack the typical genotype for this disease.

Question

Quizplus · Accepted Answer

Incomplete penetrance refers to situations in which individuals possessing a particular genotype do not always express the associated phenotype. Gene interactions, such as those involving modifier genes, can lead to incomplete penetrance. Environmental factors may also play a role in penetrance. The concept of incomplete penetrance does not refer to the severity of the disease or the presence of the disease in individuals lacking the typical genotype.

Which of the Following Is TRUE of Incomplete Penetrance