Complex sentence: Dr. Franklin William Stahl (born 1929) is an American moelcular biologist, with Matthew Meselson he conducted the famous Meselson-Stahl experiment showing that DNA is replicated by a semiconservative mechanism.
Split into simpler sentences: Dr. Franklin William Stahl (born 1929) is an American moelcular biologist. With Matthew Meselson he conducted the famous Meselson-Stahl experiment showing that DNA is replicated by a semiconservative mechanism.