#I know PTSD causes an epigenetic nightmare

[sunset-peril]

I actually tend to hc that all the Links are descended from another at some point.

However, what do you think about epigenetics being a viable reason for such?

You mean epigenetics being the reason they all are similar? Or that epigenetics is the reason they're all descendants of each other? I'm not sure I understand the question.

However, considering that epigenetics regards the condensed-ness (that's not a word but oh well) of the histones and the DNA wrapped around them and that most epigenetic changes are extremely reversible due to being caused by environmental stimuli (the only epigenetic changes that are permanent being CpG methylations in gene promoters, because those control cell differentiation.), I don't think epigenetics would leave a permanent mark on all Links as a whole. If Twilight Princess was Ocarina of Time's grandson or great-grandson, then that would be the only time I could see epigenetics playing a role in more than one Link. However, I think the rest of them are too far apart in the bloodline to have any real epigenetic effect on each other. Generally, epigenetic changes have been reversed after two or three generations, unless whatever stimuli that caused the original modification was persistent. (We used diabetic rats and poor/proper dieting for this study, and research on psychological epigenetics is still very new)

Although now that you mention this, I am curious to see how epigenetics would play a role in BotW/TotK's children.

I hope that answers the question!

For me I definitely hc that Skyward, Ocarina, Twilight Princess and BotW/TotK being all relatives (BotW being descended from TP literally being a foundational piece in my lore). I just don't know enough about the rest of them to decide for the rest of them.