What kind of visual aid would you use to best illustrate this step? "Tape the washer to the top of either bottle, as shown. (Make sure the tape doesn't cover the hole in the washer.)"

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.