epigenesist


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epigenesist

a supporter of the theory of epigenesis.
See also: Biology
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Ultimately, Goldstein suggests, epigenesist ideas offer Blake an opportunity to make intellectual "mischief," and his works are contrarian experiments that prod at ongoing tensions--not just about whether an embryo is "preformed" or undergoes structural changes during gestation; but whether such structural changes derive from inner, organic processes, or from the external and contingent play of environmental forces (50).
Hailer himself started as a preformationist, briefly converted to epigenesist, and ended his life a staunch defender of preformation.