We Finally Know How Sperm ‘Remember’ And Pass on Non-DNA-Coded Traits to Embryos – ScienceAlert

Studies in mammals have shown that the ‘memories’ of various environmental effects such as diet, weight, and stress  are being passed on from dads to offspring, despite these states not being coded for in the DNA sequences carried by sperm. Now, we have a new explanation for how it’s possible.
The story has much to do with epigenetics. Molecules that attach themselves to DNA can act like on-off switches that control which sections of DNA get used but until now we haven’t known which of these molecules…

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