ɹˈɪtʃɚd ˈænθəni dʒˈɛfɚsən bˈɔːɹn nˈaɪntiːnhˈʌndɹɪd fˈɪfti sˈɪks ɪz ɐn ɐmˈɛɹɪkənbˈɔːɹn məlˈɛkjʊlɚ baɪˈɑːlədʒˌɪst ænd sˈoʊʃəl ˌɑːntɹɪpɹənˈʊɹ hˌuː dɪvˈɛləpt ðə wˈaɪdli jˈuːzd ɹᵻpˈoːɹɾɚ dʒˈiːn sˈɪstəm dʒˌiːjˌuːˈɛs, kəndˈʌktᵻd ðə wˈɜːldz fˈɜːst bˌaɪoʊtˈɛk kɹˈɑːp ɹᵻlˈiːs, pɹəpˈoʊzd ðə hˈɑːloʊdʒnˌoʊm θˈiəɹi ʌv ˌɛvəlˈuːʃən, paɪənˈɪɹd bˌaɪəlˈɑːdʒɪkəl ˈoʊpən sˈoːɹs ænd fˈaʊndᵻd ðə lˈɛnz.
Richard Anthony Jefferson (born 1956) is an American-born molecular biologist and social entrepreneur who developed the widely used reporter gene system GUS, conducted the world's first biotech crop release, proposed the Hologenome theory of evolution, pioneered Biological Open Source and founded The Lens.