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.
A: The planet Neptune has 13 satellites, or moons. The largest is Triton, which was discovered by amateur astronomer William Lassell on October 10, 1846, just 17 days after German astronomers discovered Neptune, according to NASA.