https://en.wikipedia.org/wiki/Transgenerational_trauma

Specifically, to resolve YES, the claim must be that:

• The child has some specific (potentially unconcious) knowledge of the world event that occured, which can influence their behavior or emotional reaction to it.

• This knowledge came through the child's genetics, epigenetics, or other transit mechanism that happened prior to the child's birth and came directly from the mother's body.

This is contrast to social transmission mechanisms, such as talking to the child about it, the child noticing the reaction of other humans to the event, or other "learned" behavior.

Wikipedia doesn't need to state that this mechanism is known with certainty, just that it seems likely.

I'll ignore vandalism and other edits that only last a short amount of time.