Non-mosaic Down syndrome is a genetic disorder. Most people with non-mosaic Down syndrome have three copies of chromosome 21 in all of their cells (chromosome 21 trisomy); some have an extra copy of chromosome 21 attached to a different chromosome in all of their cells (chromosome 21 translocation).
Making the world better, one answer at a time. Stanislao Cannizzaro, an Italian chemist who worked with Dmitri, inspired Dmitri Mendeleev to come up with his creative ideas. Atomic Weight also inspired Mendeleev.
Henry Moseley created the modern periodic table by putting the elements in order by atomic number. Dmitri Mendeleev made the first periodic table that could successfully predi â¦ ct future elements, but ordered his elements by atomic mass, which we do not do today.endeleev first created the periodic table in 1869.  He thought that the elements must be organised in some way, that we would be able to use for experiments. And he first t â¦ hought of the periodic table. He tried and tried but could not get them all to fit.