<IMG align=left border=0 height=150 src="images/geneti3.gif" width=70 alt="protein">The information on how to assemble proteins are stored in each cells nucleus within chromosomes. Humans have 46 chromosomes or 23 pairs. Within each pair one chromosome comes from our father and one from our mother. Humans have around 30,000 genes stored within these 46 chromosomes. These genes contain the instructions for how to make all the proteins that our cells can produce. Therefore some genes should be exactly the same for all of us such as genes which make insulin and other essential proteins. Other genes make us unique such as those which control our height, eye color etc.