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i’m not surprised that a mechanism like this is involved in memory storage/retrieval.

im left with questions about the heritability of these epigenetic parts of memory.

Heritability? How? Remember that gamets (egg/sperm) are not affected by this, so passing these memories onto the next generation is not plausible.

this particular kind of interaction would not be transmissible. Some other mechanisms, such as DNA methylation or miRNA may be though.