Yeah, Mrs. Noah could have been a Neanderthal!
We know Noah liked to get drunk.......................
LOL. Noah had beer goggles?
1. beer goggles
phenomenon in which one’s consumption of alcohol makes physically unattractive persons appear beautiful; summed up by the phrase, “there are no ugly women at closing time”
Mrs. Noah likely wasn't 'perfect in her generations' and the sons' wives likely weren't either. Hence the limited recurrence of the 'giants' after the flood.
Apparently this bottleneck was sufficient to reduce the extent of the genetic contamination to a level that did not threaten the human line of the Messiah, however.