You’re spot on. The average risk of some genetic issue occurring in a standard pregnancy is about 3%, and the average risk between 3rd degree relatives, such as first cousins, is about 6%. I used to be a genetic counselor, and I’d seen a few first cousin cases, and even a case of double-first cousins, which was a higher risk, but still not as high as the much more run-of-the-mill scenario of a couple both being carriers of any given recessive genetic condition. People freak out about it because of the jokes about inbred families, but the much bigger issue with it is the power dynamic, especially concerning age. When you hear incest, you shouldn’t be worried about kids with 6 toes, you should be worried about rape.
You’re spot on. The average risk of some genetic issue occurring in a standard pregnancy is about 3%, and the average risk between 3rd degree relatives, such as first cousins, is about 6%. I used to be a genetic counselor, and I’d seen a few first cousin cases, and even a case of double-first cousins, which was a higher risk, but still not as high as the much more run-of-the-mill scenario of a couple both being carriers of any given recessive genetic condition. People freak out about it because of the jokes about inbred families, but the much bigger issue with it is the power dynamic, especially concerning age. When you hear incest, you shouldn’t be worried about kids with 6 toes, you should be worried about rape.