MadSci Network: Agricultural Sciences |
Virtually every aspect of modern agriculture utilizes DNA extraction. Isolation and/or manipulation of genetic material allows crop scientist to produce cultivars that are more drought resistant, disease resistant, herbicide resistant, etc.
DNA analysis of meat animals (poultry, swine, and cattle) allows for selection of desired characteristics, lineage verification, and point of origin verification.
Genetic applications in agriculture are almost unlimited so its impossible to cover all the possibilities in the context of a single question, but a Google search "DNA and (plant or animal you are interested in)" will generate massive amounts of information.
In addition your local agriculture extension service is a great source of information.
Best regards,
Forrest
Try the links in the MadSci Library for more information on Agricultural Sciences.