Question

Every cell in the body has a full complement of all genes, however each cell type reads only certain genes. For example, both white blood cells and liver cells have genes for making digestive enzymes but they do not read them. how is this possible??? I have no idea?

I googled cell differentiation and got a fairly good result from Wikkipedia.
taryn
i don't know either my science teacher mr.radeke has know clue either!