Nature publishes paper on the edge of evolution, Part 1

Nature has published an interesting paper recently which places severe limits on Darwinian evolution. This is the first of several posts discussing it.

The manuscript, from the laboratory of Joseph Thornton at the University of Oregon, is entitled "An epistatic ratchet constrains the direction of glucocorticoid receptor evolution". ( http://tinyurl.com/yeq2cy8 ) The work is interpreted by its authors within a standard Darwinian framework. Nonetheless, like the important work over the years of ...