During osmosis, the semi-permeable membrane is one that:
a. does not allow any particles to pass through.
b. allows only very large particles through.
c. decides what particles to let through based on cell signals.
d. allows only very small particles or water through.

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.

the answer is b. glad to .