How have other scientists built upon Jenner's work?

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

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.

sex cells are usually half's then they find another half and make a fertilize egg

answer///alimentary canal/gastrointestinal tract.digestive (gi);