Gene expression in eukaryotes can be regulated at various levels. Certain mutations in flies may cause them to develop an extra set of legs or wings. , which determine the formation and arrangement of body parts in multicellular organisms, control gene expression by regulation of .

this protocol describes a detailed procedure for intracellular flow cytometry staining.

carbon

explanation:

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.