Aperson who is genetically predisposed to be obese cannot improve his or her overall health through moderate lifestyle changes.

Obese people may change their weight slowly by altering lifestyle habits with the support of their family and friends. Even if weight remains unchanged, overall health will improve with moderate lifestyle changes.

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.