Mutation and its role in evolution: A beginners guide

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SJ GOULD SETH

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So while thinking about how the gap in a graft
pic of graft formation etc
is healed and graft hybrids may form
Callus Formation at Graft Interface in Ginkgo biloba L.
model
It is suggested that this discovery throws new light on the phenomenon of graft-hybridization. In spite of many reports to the contrary, graft-hybrids have so far been explained only on the basis of their being chimaeras.independent of gene content in the ordinary senseAnd so it might be that any phenotypic variation("occasional single variations" De Vries speaks for Darwin on(continued in the thumnail above)) that need not necessarily involve specific DNA genes (changing), could count as non-genetic "mutations", If you will.Now what "single" means DOES mean not sexual but what else... well, Gould would have it not be more than rarely attached to "benefical" necessarily etc. Tricky thing language is indeed. There might be a small opening to dissent against the notion but it is small indeed.Edited by Brad McFall, : refEdited by Brad McFall, : letter misig

I do not want to modify anyone's desire for a better constitution but it might re-p(l)ay to think about the thread with Huxley's words on the topic in hand.

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Evolution The Modern Synthesis by Julian Huxley 1964

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