[JockoManning]

Sorry. I don’t know the answer to that question. One would think that the DNA in all cells would be identical ... somehow. Beyond my knowledge & awareness, however.

[xone]

i.e. the expression of this or that gene or set of genes CAN BE AND ROUTINELY IS changed by the internal/external environmental experiences, conditions.

If the above were so, humans would be in a state of perpetual chimerism. Not to mention the goings on vis a vis male zygote production.