Every cell is surrounded by a thin membrane. what is the main function of this cell membrane?

to separate the inside of the cell from the outside environment

answer; i believe its (ovulation);

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.