For some time I have been claiming that epigenetic inheritance is a problem for evolution. Here we have Science Daily agreeing.This rapid ability to produce variation is in agreement with IDvolution.
From the article: "The results suggest that domestication has led to epigenetic changes.
For more than 70 % of the genes, domesticated chickens retained a higher
degree of methylation. Since methylation is a much faster process than
random mutations, and may occur as a result of stress and other
experiences, this may explain how variation within a species can
increase so dramatically in just a short time."