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.
Prominent Russians: Dmitry Mendeleev. February 8, 1834 â February 2, 1907. Mostly known in the West for creating the Periodic Table of Elements, Dmitry Mendeleevâs contribution to the development of Russia is huge.A real Renaissance man, his areas of study ranged from chemistry to aeronautics to Arctic exploration to demographics.endeleevâs greatest contribution to science is certainly the Periodic Table of Elements, which says the properties of basic elements repeat periodically when they are arranged by their atomic number. He made the discovery in 1869 during his work on the award-winning textbook on chemistry basics.