Even when genetic tests correctly predict a genetic disorder, they usually cannot foretell how severe its symptoms will be or when they will appear.

Question

Quizplus · Accepted Answer

Genetic tests can often predict the presence of a genetic disorder but the variability in gene expression, environmental factors, and other genetic modifiers means that the severity and onset of symptoms can be difficult to predict accurately.

Even When Genetic Tests Correctly Predict a Genetic Disorder, They