Anachronous Rex wrote:Riiser-Larsen wrote:
Incest is not illegal because they don't think the two parties can consent, it's illegal because it often results in birth defects. It has to do with genetics, and it's really hard to explain. At the simplest, two similar genomes (like those in siblings) are not supposed to combine, or they will cause mutations.
Not really.
Mind you, marriage does not necessitate procreation, and one does not need to be married to have children. You can knock-up your sister and, provided she consents and is of legal age, that would be totally legal.
The truth is there isn't any real legal grounds for prohibiting sibling marriage, other then that people find it icky and no one is really pushing for it.
I mean really, having sex with your sister and getting her pregnant would result in a 2% increase in birth defects IIRC. Unless your family's been doing it for generations, it's not that big of a deal.





