For this to happen the DNA must replicate itself exactly. When DNA replicates itself and the cell divides both of the new cells that are produced contain the exact same DNA (barring mutations) which means both new cells can code to make the same proteins.
Americium was first produced in 1944 by the group of Glenn T. Seaborg at the University of California, Berkeley. Although it is the third element in the transuranic series, it was discovered fourth, after the heavier curium.
Discovery of Rutherfordium. Rutherfordium was the first transactinide or super-heavy element to be discovered. Rutherfordium may first have been synthesized in 1964 when a team of scientists at Dubna, Russia, led by Georgy Flerov, bombarded a plutonium target with neon ions.