Chapter 22 Notes: Species and Speciation: Figure WN22.1 - Individuals that have been produced by sexual reproduction quickly come to share ancestry.

Figure WN22.1 - Individuals that have been produced by sexual reproduction quickly come to share ancestry.

Figure WN22.1. Individuals that have been produced by sexual reproduction quickly come to share ancestry. (A) The pedigree of a single random-mating population; individuals shown in different colors share the same set of ancestors within a few tens of generations (indicated by colored bars). (B) If the population is spread over a wide area, then the sets of ancestors tend to be in the same geographic area. However, eventually all individuals will come to share the same set of ancestors (top bars), unless there is a strong geographic barrier to movement (dashed line on right).

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