Re: Sympatric Speciation or Speciation without Changes in Genes


<CNCabej@xxxxxxx> wrote in message news:g5o1p1$kff$1@xxxxxxxxxxxxxxxxxxxxxx
Sympatric Speciation or Speciation without Changes in Genes

<snip>
Are changes in genes or in allele frequencies necessary for speciation
to occur?
In depth discussion of the issue can be found in the website
http://www.epigeneticscomesofage.com (chapter 20, pp. 645-732)


It seems to me that as long as one by "intrinsically *speciating* event"
does not specifically or only mean a DNA mutation that makes impossible
sexual reproduction between an individual with the type of genome from which
such a mutation has arisen and a thus mutated individual itself, then any
cyto-chemical and physiological mechanisms (e.g. function of specialized
neurons and glands) that can contribute to causing "reproductive isolation"
(between individuals of the same species) can easily and plausibly be
regarded as potentially - and of course sometimes also actually -
"speciating".

P


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