GROSS ANATOMY

Detailed explanation-1: -Several lifestyle factors have been identified that might modify epigenetic patterns, such as diet, obesity, physical activity, tobacco smoking, alcohol consumption, environmental pollutants, psychological stress, and working on night shifts.

Detailed explanation-2: -While genetic changes can alter which protein is made, epigenetic changes affect gene expression to turn genes “on” and “off.” Since your environment and behaviors, such as diet and exercise, can result in epigenetic changes, it is easy to see the connection between your genes and your behaviors and environment.

Detailed explanation-3: -Epigenetic changes alter the physical structure of DNA. One example of an epigenetic change is DNA methylation-the addition of a methyl group, or a “chemical cap, ” to part of the DNA molecule, which prevents certain genes from being expressed. Another example is histone modification.

Detailed explanation-4: -A genetic mutation is a hardcopy change in one or more parts of that sequence. This could just make you, you. Or it could contribute to a genetic disease. An epigenetic change also changes a gene’s DNA-but not at the sequence level.