Skin and nerve cells have different appearances and characteristics from each other, although they contain the same dna. why? a. the genes expressed in in skin cells may not be expressed in nerve cells and vise versa
b. the genes in skin cells are transcribed but not translated as genes of nerve cells
c. the dna in nerve cells undergoes mutations making them different from dna in skin cells.

The correct answer is A. the genes expressed in skin cells may not be expressed in nerve cells and vise versa.

Explanation:

Every cell in the body contains the same set of genes in their chromosomes but only some fraction of its gene expresses which allows the different cells to appear and function differently in their environment.

Therefore every cell makes different proteins according to the job that cell performs like in RBC genes are expressed to synthesize the hemoglobin proteins but other cells do not produce this protein because genes for hemoglobin is not expressed in them.

Therefore the right answer is A. the genes expressed in skin cells may not be expressed in nerve cells and vise Versa.

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )