Barr body. Definition. noun. The small, dark-staining mass of inactive X chromosome within the nucleus of non-dividing cell. Supplement. Barr bodies are previously used as the basis for sex determination especially during the Olympics (see Barr test). Word origin: named after its discoverer Murray Llewellyn Barr, a Canadian anatomist who first identified the particle in the nucleus of neurons of female cats. Synonym: sex chromatin.
As of September 2011, there are nine Unified Combatant Commands as specified in Title 10 and the latest annual UCP. Six have regional responsibilities, and three have functional responsibilities.
The total number of active duty general officers is capped â¦at 302 for the Army, 279 for the Air Force and 80 for the Marine Corps. For the Army and Air Force, no more than 16.3% of the service's active duty general officers may have more than two stars, and no more than 25% of those may have four stars. This corresponds to 12 Army generals, 11 Air Force generals and 3 Marine generals. So your answer is 12 4-star generals in the US Army.