How far can a gene disperse? Historical and contemporary gene dispersal can be estimated from spatial genetic structure and paternity analysis, and Rong et al. (pp. 285–296) find that an estimate of gene flow in Daucus carota ssp. carota based on contemporary pollen dispersal is much larger than an estimate of historical flow. The results have implications for the ease with which transgene flow might occur from cultivated GM carrots to wild carrot populations.
How fast do transgenes move from crops into wild relatives via gene flow?
Genetic connectivity is crucial in rapidly changing environments as it allows exchange and dispersal of adaptive genes among plant populations.
Gene flow is important in counteracting the divergence of populations but also in spreading genes among populations. Buehler et al. describe the effective mating system and contemporary gene flow in the alpine perennial...
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