The food-scarce environment of our ancestors likely led to humans' propensity to gorge when food is available and to crave high-caloric foods—a trait that might lead to an epidemic of obesity when food is plentiful. this illustrates how:

This setting will no longer happen for people nowadays are much conscious with their health and that people would not think of food scarcity, for all types of food are made available and that various fitness gym are everywhere. Being obese is lack of self-control and eating healthy diet is always choice. Therefore, evolve mechanisms are not always adaptive in modern society.

the answer is b)3/8x+1

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.