DavidMcC wrote:In which case, evolutionary theory doesn't need much of a rethink!Can you give the Laland reference?
It needs a
massive rethink. From the paper Calilasseia provided:
http://www.nature.com/polopoly_fs/1.160 ... 14161a.pdfIn our view, this ‘gene-centric’ focus fails to capture the full gamut of processes that direct evolution. Missing pieces include how physical development influences the generation of variation (developmental bias); how the environment directly shapes organisms’ traits (plasticity); how organisms modify environments (niche construction); and how organisms transmit more than genes across generations (extra- genetic inheritance). For SET, these phenomena are just outcomes of evolution. For the EES, they are also causes.
Mathematical models of evolutionary dynamics that incorporate extra-genetic inheritance make different predictions from those that do not. Inclusive models help to explain a wide range of puzzling phenomena, such as the rapid colonization of North America by the house finch, the adaptive potential of invasive plants with low genetic diversity, and how reproductive isolation is established.
In addition, extra-genetic inheritance includes socially transmitted behaviour in animals, such as nut cracking in chimpanzees or the migratory patterns of reef fishes. It also encompasses those structures and altered conditions that organisms leave to their descendants through their niche construction — from beavers’ dams to worm- processed soils. Research over the past decade has established such inheritance to be so widespread that it should be part of general theory.