Antropolog pertengahan abad ka-20 William C. Boyd ngedefinisian artin ras punika dados : "Suatu populasi sane mabinaan secara signifikan saking populasi sane lianan ring hal frekuensi kaping siki utawi lebih gen sane kagelahang.
The mid-20th-century anthropologist William C. Boyd defined race as: "A population which differs significantly from other populations in regard to the frequency of one or more of the genes it possesses.