I want to know the answer to the following question:
What did two biologists point out in 1964?
All the background I'm provided with is that "As the anthropologists Leonard Lieberman and Fatimah Linda Jackson observed, "Discordant patterns of heterogeneity falsify any description of a population as if it were genotypically or even phenotypically homogeneous".". Is that enough to answer the question?
Answer: no