If plants need light to grow, then plants in the shade will grow more slowly

this is correct this is because the plant in the sun is getting more of the nutrients it needs vs the plant without the sun or with little sun will grow slower or even die because it is not getting the it substances needs to grow and survive.

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.