Excellent science in all fields of biology is done everywhere now, so there are lots of places to consider. Besides an advanced education in science, graduate school can provide excellent exposure to different people, cultures, ways of doing things, etc. Faculty members at UGA can give you tips on who to contact at various programs and departments. Homepages usually offer information about the program and descriptions of the research interests of individual faculty members. Browse those descriptions and contact the faculty for more information.
Most faculty are happy to respond to such inquiries.
You can also find information about graduate programs in Peterson's Guide in the library, at the bookstore or on the web. Take the verbal, quantitative and advanced parts of the exams. Most graduate programs start making decisions in February for the following year. Educate yourself about the various forms of financial assistance available from graduate programs. In general, programs offer fellowships and assistantships that carry teaching or research responsibilities.