The Melanesians didn't pass anything on, that's chronologically impossible. They are the descendants of a migration wave out of Africa, through Asia, to Austra

The Melanesians didn't pass anything on, that's chronologically impossible. They are the descendants of a migration wave out of Africa, through Asia, to Australia. If some interbreeding with the Denisovan (there is only one!) happened, the Melanesians are the closest extant relatives of whoever did the interbreeding. Outside Melanesia, that branch of humanity was later replaced by the expansion of another migration wave, and the again by the Han expansion.