For that reason we have examined another horse breed, the Icelandic horse, which is historically quite divergent from Rocky Mountain horses.
Historically, competition between genetically divergent cancer cell variants leading to expansion of the "fittest" clone was thought to drive metastasis (Greaves and Maley, 2012).
Consistent with the high levels of deforestation in West Africa, rainforest populations from West and Central Africa are morphologically more divergent today than they were historically (Figure 4).
In highlighting political bargaining contexts and how these change over time, the paper illustrates the critical importance of historically informed city-level political economy analysis for understanding divergent urban development outcomes.
Molecular studies have, however, discovered four deeply divergent genetic lineages within G. zebratus, three historically isolated lineages within P. burchelli and three lineages of S. capensis in the Breede River system [ 30- 32], Chakona et al., in preparation.
Data from this study of 23 of those subspecies demonstrates there are eight highly divergent lineages that are geographically distributed in regions corresponding to historically isolated lowland basins or islands, and these do not always correspond to currently recognized subspecies patterns.
Historically, couvade has been poorly defined; it has encompassed practices that are quite divergent in terms of timing, participants, activity, and cause.
