A persons skin cells and eye make different types of proteins to perform their functions. What's is the source of the instructions from which all of the proteins are made

Answer: From DNA

Explanation: DNA is the inheritance molecule in humans and carries the information for every protein needed for our metabolism. DNA is transcripted to produce RNA and this is translated to produce proteins. Each type of cells has the same DNA (With some variations due to mutations in life) but their DNA express differently according to their specialized function.