Some genes will only be activated if environmental factors trigger them.

Question

Quizplus · Accepted Answer

This is true. Some genes have what are called "epigenetic marks" that determine whether they will be expressed or not. These marks can be triggered by environmental factors such as diet, stress, or exposure to toxins. Therefore, even if an individual has a gene associated with a particular trait, it may not be expressed unless the environmental factors that trigger it are present.

Some Genes Will Only Be Activated If Environmental Factors Trigger