While studying Williams syndrome, experts accidentally found that people with musical and mathematical talents are actually caused by genetic disorders or deletions and the same genetic disorder can also lead to psychosis such as schizophrenia. Most children born with Williams syndrome have 20 genes misaligned with chromosome 7. This happens to one out of every 20,000 people in the world.
The significance of chromosome 7 to human beings is most likely to be highlighted by the author next.