The base complement A=T shares two hydrogen bonds, while the base pair Gâ¡C has three hydrogen bonds. All other configurations between nucleobases would hinder double helix formation. DNA strands are oriented in opposite directions, they are said to be antiparallel.
Referees in the NBA make anywhere from $100,000 to $550,000 for a season of 82 games total. 1  Entry-Level Referees: Referees that are just starting out in the NBA make $150,000 each year. 2  Senior Referees: Of course, when you have experience, there is a higher price tag stamped onto that experience.
WNBA referees: The referees in WNBA make considerably less ($500 per game or about $16,000 per year). These referees mostly work part-time. Note: The league seldom releases salary information about referees, and the latest salary data was provided in late 2009 ahead of the referee lockout.