Wow, I've never started a new topic before. I looked pretty thoroughly through the posts, so I'm pretty sure this one hasn't been made yet...
I woke up a few days ago to find ALL my women who are 48 and 49 years of age pregnant by the same dude. Has this happened to anyone else before? I've been playing the game for years, and it's never happened to me up until a few days ago.
I'm doing lots of genetic work with my tribes, so although it wasn't expected, it WAS welcomed!
I'm just curious if this has ever happened to anyone else.

There are actually quite a few discussions about that kind of thing happening for all three VV games, but it's not always easy to find what you're looking for in the thousands of posts we have here.

Any time a villager has a skill, they can (and often do) use that skill on their own initiative, even if it's not set as their preferred skill. It's not a big deal if, for example, a scientist decides to go fishing one time out of many work cycles, but if he decides to use his parenting skill that one time and is successful, the effects will last for 2 game years. The next time he decides to use the parenting skill, he must choose another female, and... well, you get the idea.

Most veteran players use that to their advantage in planning their population strategy.

Oh, thanks. Sorry, I must have accidentally missed those posts.

This happened to me once in VV2.

It was sooo annoying, cause he had 7 kids with 6 different moms! (One had twin girls.)