Board Thread:General Discussion/@comment-25301131-20150302004409/@comment-26072045-20150424014721

Mr B Natural wrote:

OnlyOnTuesdays88 wrote:

Ruby gleam wrote: Twins dont run in the family I think that that twins in the show are used as a clever plot device Actually there is such thing as a tendency for twins to run in the family but this mainly applies with fraternal twins. It's very unlikely to have a gene that makes it morel likely to have identical twins. Anyway since Dipper and Mabel are fraternal and Stan and his brother are identical they were conceived in different ways. Therefore it wouldn't "run in the family" because it'ss two completely different types of twins. It's just coincidence in this case. How would fraternal twins run in the family? And wouldn't it have to be on the mother's part, and most likely Dipper and Mabel and Stan are related paternically (It'll catch on)?

There's a specific gene that makes hyperovulation (conception of fraternal twins) more likely to happen (I'd like to correct my previous statement and say that there is NEVER a genetic tendency to have twins). You're completely right about it being only passed down by the mother. Like I said it was just a coincidence (well except for plot-wise).