What is nutritional adaptation determined by genetics?

It is a very interesting topic because it explains how the expression of a gene is turned on or off by marks in the genes due to the environment.

It is what explains how a cell can develop an eye, or hair, or hands, or a heart. This is so because all the cells of an animal contain the necessary information, genes, to do so.

But, did you know that the environment in which the animal is found will determine which genes will be expressed and which ones will not?

Furthermore, we now know that these changes in gene expression are inherited for up to three generations.

Interesting, right?