Frances Arnold

Frances Hamilton Arnold (born July 25, 1956) is an American chemist and engineer. She is known for her methods of directed evolution to create useful biological systems, including enzymes, metabolic pathways, genetic regulatory circuits, and organisms. 
She is the Linus Pauling Professor of Chemical Engineering, Bioengineering, and Biochemistry at the California Institute of Technology.
In 2018, Arnold was awarded the Nobel Prize in Chemistry alongside George P. Smith and Greg Winter.