Kulakov M.P. Local and global gene flow role in genetic divergence of the populations coupled by migration

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Abstract
This paper explores the conditions for the spatial differentiation of traits (divergence) in a homogeneous area, where gene flow is possible between adjacent populations (local connection) and distant regions (global). It is found that the probability of divergence, which often occurs under disruptive selection, decreases as the radius of local (short-range) coupling increase. Introducing a few long-distance connections, that bring previously isolated subpopulations together, promotes divergence.