A straightforward research idea: Compare the recognized count of subspecies (races/breeds/breeding populations/clusters etc.) with measures of genetic variation. The most obvious is the Fst but it’s not an optimal metric. There is some literature on this: Woodley, M. A. (2010). Is Homo sapiens polytypic? Human taxonomic diversity and its implications. Medical hypotheses, 74(1), 195-201. Fuerst, … Continue reading Species genetic variation and number of subspecies/races/breeds/breeding populations/clusters etc.