In people with chronic myelogenous leukemia, the chromosomes in the blood cells swap sections with each other. A section of chromosome 9 switches places with a section of chromosome 22, creating an extra-short chromosome 22 and an extra-long chromosome 9.
Discovered on September 23, 1846, by John Couch Adams. Neptune was the first planet found by mathematical prediction rather than by observation. Unexpected changes in the orbit of Uranus led astronomers to deduce that its orbit was subject to gravitational perturbation by an unknown planet.
1. Neptune is the fourth largest planet in the Solar System. 2. Neptune is a gaseous planet, composed of hydrogen, helium, methane, with traces of ammonia and water. 3. Neptune was discovered by Urbain Le Verrier, John Couch Adams, and Johann Galle on September 23, 1846. 4.