Population bottlenecks reduce genetic diversity (IMAGE)
Caption
A founder event impacts the genetic diversity of a population. In this graphic, individuals in a population have genomes containing various genomic segments (colored bars at top) that are inherited ‘identical-by-descent’ from a common ancestor. A bottleneck, however, reduces the diversity of segments. Because of recombination events over time, the lengths of these segments gradually shorten (moving clockwise around clock). Together, these tell researchers about the founder strength and age, respectively.
Credit
Rémi Tournebize, UC Berkeley
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