Dietary Factors Are Now Being Studied for How They Regulate

Dietary factors are now being studied for how they regulate gene activity and how this contributes to disease.For example,how does a diet high in unsaturated fatty acids help maintain a healthy blood lipid profile? Within hours of feeding animals with diets rich in polyunsaturated fatty acids (PUFAs) ,there is an increase in the activity of genes responsible for making enzymes that break down fats and a reduction of the activity of genes responsible for making enzymes that make fats.This has the effect of changing fat metabolism,which leads to a lowering of blood lipid levels.The control of what type of DNA sequence would PUFAs most likely be affecting?

A) intron sequences
B) exon sequences
C) enhancer sequences
D) micro-RNA sequences