Introgressive hybridization facilitates adaptive divergence in a recent radiation of monkeyflowers.

ABSTRACT: A primary goal in evolutionary biology is to identify the historical events that have facilitated the origin and spread of adaptations. When these adaptations also lead to reproductive isolation, we can learn about the evolutionary mechanisms contributing to speciation. We reveal the complex history of the gene MaMyb2 in shaping flower colour divergence within a recent radiation of monkey flowers.In the Mimulus aurantiacus species complex, red-flowered M. a. ssp. puniceus and yellow-flowered M. a. ssp. australis are partially isolated because of differences in pollinator preferences. Phylogenetic analyses based on genome-wide variation across the complex suggest two origins of red flowers from a yellow-flowered ancestor: one in M. a. ssp. puniceus and one in M. a. ssp.flemingii. However, i

SUBMITTER: Stankowski S 

PROVIDER: S-EPMC4571715 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature