The animal functional genomics laboratory at mississippi state university conducts genetic research involving farm animals. the results can be used to genetically modify cattle. considering the pros and cons of such a research program, those arguing against have concerns in the area of

A.  food safety

Explanation:

Genetic modifications may create poisonous, or allergy-producing proteins in organisms. Cattle are grown for milk and meat consumed by humans. So food safety is a major concern when discussing genetically modified cattle.

(From USATestprep)

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).