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.
 With the invention of telescopes, other planets were later discovered.  Neptune was discovered on September 23, 1846, but was mathematically predicted much earlier.  Pluto, although now a dwarf planet was discovered in 1930.o country discovered all the planets. The five classical planets,  Mercury, Venus, Mars, Jupiter, and Saturn, have been known to many  cultures for thousands of years. Nico â¦ laus Copernicus, the first to  propose that Earth was a planet, was from Royal Prussia, now part  of Poland.