Here are some books that you may find useful during your studies. Search the Bennies catalogue Accessit for more, or browse the Non-fiction collection NFS..
Genetic Modification of Food by 
From DNA to GM wheat : discovering genetic modification of food by 
A geneticist is a science who studies genes, including how they are inherited, mutated, activated, or inactivated. They often study the role that genes play in disease and health. Environmental geneticists specialize in studying the interactions between genes and environmental factors that lead to adverse health effects, disease, and aging.