Complex sentence: After two years he transferred to the University of California, Berkeley, from which he received a Bachelor of Science degree in chemistry in 1950 and a PhD in chemistry and minor in physics from the California Institute of Technology (Caltech) in 1954.
Split into simpler sentences: After two years he transferred to the University of California, Berkeley, from which he received a Bachelor of Science degree in chemistry in 1950. He received a PhD in chemistry and minor in physics from the California Institute of Technology (Caltech) in 1954.