Molecular structure of DNA. The basic unit of DNA is the nucleotide, consisting of a phosphate group, a sugar molecule (deoxyribose) and one of four nucleobases (also known as bases): adenine (A), thymine (T), guanine (G) or cytosine (C).
Majors That Pay You Back. 1  Choosing a major makes an even bigger impact on future earnings than deciding which school to attend. PayScale ranks the highest paying college majors for associate, bachelor's and graduate degrees. Top 5 Associate Degrees. A 4-year degree isn't a requirement for career success. If you want a 2-year degree that leads to high pay, check out the associate degree majors on this list.
The salaries of doctors also vary greatly by concentration: Anesthesiologists are the highest-paid workers of 2011 at $234,950, while other high-paying medical positions include surgeons ($231,550), OB/GYNS ($218,610), and oral and maxillofacial surgeons ($217,380).