What do your genes do?
Your genes are instructions, inherited from your parents. Half your genes came from your mother and half from your father. Genes tell your body how to make all its proteins. Each new cell in the growing embryo receives a full set of genes. But not every cell needs to make every protein and cells make some proteins only at certain times. Some genes are instructions for proteins that regulate the activity of other genes. Such 'control genes' govern important events in the developing embryo.