Assess the effect of selective breeding on food crops.

There are numerous advantages and disadvantages that selective breeding has on food crops. A few of the advantages are; the creation of high quality products, provides a sustainable food chain, eliminates disease and creates new varieties of food crops. A few disadvantages of selective breeding on food crops are; no control over genetic mutations, brings discomfort to animals, creates offspring with different traits, and poses some environmental risks. 

The answer is c) tons