An emergency reaction when dealing with a threat often includes sympathetic nervous system arousal and the mobilization of one's energy. this is best illustrated by

An emergency reaction when dealing with a threat often includes sympathetic nervous system arousal and the mobilization of one's energy. this is best illustrated by - the fight or flight response.

A fight or flight response, also called hyper arousal is a physiological reaction which occurs in response to a perceived harmful event, attack, or threat to survival.

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.