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How rapidly can two populations diverge when exposed to different selection pressures? And what mechanisms contribute to rapid population divergence? A remarkable new study by Badyaev et al. of house finches Carpodacus mexicanus suggests that simultaneous maternal adjustment of offspring sex ratio and growth rates has played an important role in rapid population differentiation associated with an explosive range expansion.

Original publication

DOI

10.1016/S0169-5347(02)02459-X

Type

Journal article

Journal

Trends in Ecology and Evolution

Publication Date

01/06/2002

Volume

17

Pages

247 - 249