Experimental evidence suggests that the nucleoid is largely composed of DNA, about 60%, with a small amount of RNA and protein. The latter two constituents are likely to be mainly messenger RNA and the transcription factor proteins found regulating the bacterial genome.
An ophthalmologist is a medical doctor (MD) or an osteopathic doctor (DO) who specializes in eye and vision care. Ophthalmologists are trained to perform eye exams, diagnose and treat disease, prescribe medications and perform eye surgery. They also write prescriptions for eyeglasses and contact lenses.
These 10 animal facts will amaze you. A doctor of osteopathic medicine (DO) is a physician with training that differs slightly from that of a medical doctor with an MD. He or she is equally educated, with four years of undergraduate training, four years of medical schools, and additional years if he or she chooses to specialize.