Which of the following is not a way that the environment can influence traits? the presence of toxins in the environment
through epigenetic factors
expression of the dominant trait
through variation in temperature

The correct answer is - expression of the dominant trait

Explanation:

The ineraction of the genes such as dominant and recessive trait are incorporated in the genes and not influence by the environmental condition. These interaction are by the de noo mutations or due to the error in gene expression.

The environmental conditions like toxins cause alteration or mutation in the gene expressions. Temeprature or epigentic conditions are also the factor the can cause influence to traits.