Oxygen and carbon dioxide diffuse in and out of a leaf through the:
a)taproot
b)stomata
c)phloem
d)guard cell

not sure but try c two haploid cells

explanation:

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.