ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti wˈʌn hiː dʒˈɔɪnd ðə fˈækəlti æt jˌuːnɪvˈɜːsᵻɾi ʌv kˌælɪfˈoːɹniə, sˌæn dɪˈeɪɡoʊ æz ɐ pɹəfˈɛsɚɹ ɪnðə dᵻpˈɑːɹtmənt nˈaʊ dᵻvˈɪʒən ʌv baɪˈɑːlədʒi.
In 1961 he joined the faculty at University of California, San Diego as a Professor in the Department (now Division) of Biology.