Genetic surveys from the Central, Morobe and Northern Districts, Papua New Guinea.

The results of blood group surveys on a number of linguistic groups inhabiting contiguous areas within the Goilala sub-district of the Central District, the southern part of the Morobe District and the Northern District are reported. Altogether about 1900 subjects were tested, but the extent of testing varied. Red cell enzyme and serum protein systems were also investigated in two groups. Similarities and dissimilarities of blood group distributions are noted, as also are some possible gene gradients among peoples living to the north of the main divide. Two groups, the Kuni/Tauade of the Goilala sub-district, and the Roro/Kovio living towards the Papuan Gulf coast seem well distinguished from the remainder. Genetic distances were calculated for five populations north of the divide, and agree with the geographical and linguistic situation. The Weri people of the middle Waria provided an example of Hp 2-1 modified, two examples of the MDH.NG.1 variant and one of AK 2-1.