So by his own admission, Wade wants us to cut up human diversity into five races not because that's what the statistical analyses show but because thinking about it as a gradient is hard.
Loosely, one can divide phenotypic diversity into two classes.
Despite instability in many analyses, there is an increasing trend to classify eukaryotic diversity into six major supergroups: the 'Amoebozoa', 'Chromalveolata', 'Excavata', 'Opisthokonta', 'Plantae', and 'Rhizaria'.
This instrument gives a score to stratify anatomic diversity into six categories based on type of performed surgery, age at operation and similar in-hospital mortality [ 22].
In that publication the authors write that the methodology "confirmed the partition of worldwide diversity into five genetic clusters that correspond to major geographical regions" (p. 658), that is, Africa, Europe, America, Oceania, Middle East, East Asia and Central/ South Asia.
The town has packed a staggering amount of diversity into its six square miles -- black families, white families, gay and lesbian families, interracial families, interfaith families, low-income, affluent -- anything in between.
In Europe, glacial periods are known to have driven a diversity of species into three primary southern refugia located in Iberia, Italy and the Balkans from where they later recolonised central and northern Europe through range expansions (see Hewitt, 2000).
We performed multi-linear regression analysis for diversity level grouped into four groups: common genetic variation in diversity level (PC I) and variation in each of the three chicken populations separately.
We then used the statistical method developed by Loreau and Hector [48], and later improved by Fox [49], to partition the net effect of diversity on biomass, ΔY, into three components: 'dominance effects', 'trait-dependent complementarity' and 'trait-independent complementarity' (see Fox [49] for details).
Cas proteins that catalyse interference show substantial diversity, with current classification into three major groups, types I, II and III [ 6– 8], characterized by distinct effector complexes that manoeuvre crRNA to base pair with target DNA or RNA.
