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.
101 Mendelevium (Md) - Discovered in 1955. Named for Dmitri Mendeleev, the first to organize the periodic table. 102 Nobelium (No) - Discovered in 1966.Named for Alfred Nobel, chemist, inventor of dynamite and used his will to institute the Nobel Prizes upon his death. 103 Lawrencium (Lw) - Discovered in 1961.