> On Sep 9, 2015, at 10:57 AM, Christina Wahl <[log in to unmask]> wrote:
> 
> I don't know of any study that demonstrates learned behavior is heritable. Learned behaviors have been shown to be transferred epigenetically (i.e. via environmentally-induced changes to transcriptional/translational regulation, not changes to alleles). So the four groups you cite that describe "'transformations' or changes of animal cells" are not all about heritable changes.

By heritable, you mean via DNA. This is an very limited definition, imposed upon the earlier sense by geneticists. The concept of heritability predates genetics. 

> from the OED 1879    St. George's Hosp. Rep. 9 45   No heritable disease in the family.

At the time, no one knew _how_ disease could be inherited but only that it could. Now we know there are many different forms of heritability, include genetic, immunological and social. The point of the citation was really that the boundaries were already blurring by 1971

P
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