20. Plant and animal cells are bacterial cells.

identical to

simpler than

made of

larger than

larger than

Explanation:

Bacterial cells are very small - about 10 times smaller than most plant and animal cells

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.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: