"The results are plainly legible to those who study the human genome today. Between a fifth and a quarter of the DNA of most African-Americans can be traced back to Europeans. At least half of the inhabitants of Hawaii are of 'mixed' ancestry. Likewise, the DNA of today's Japanese population indicates that there was intermarriage between early settlers from Korea and the indigenous Jomonese people. Most of the Y chromosomes found in Jewish males are the same as those found among other Middle Eastern men; for all their bitter enmity, Palestinians and Israelis are genetically not so very different. The evolutionist Richard Lewontin famously calculated that around 85 per cent of the total amount of genetic variation in humans occurs among individuals in an average population; only 6 per cent occurs among races. The genetic variants that affect skin colour, hair type and facial features involve an insignificant amount of the billions of nucleotides in an individual's DNA. To some biologists, this means that, strictly speaking, human races do not exist."