Khinkhun wrote:Ah crrap! that's right! XD thx, well they turned out okay XD (in a way)
You know, other than the bickering that was occurring between the both of them. And the fact that they married for money. And the fact that their son had romantic feelings for his cousin, no doubt something inherited from his parents. And the fact that their son murdered because of how strong his feelings were, no doubt not helped by how his own parents treated him.

dilbertschalter wrote:GinRei wrote:baka1412 wrote:Kiss x Sis
Not blood related.
Anyway, I'm pretty sure biological defects still have a pretty high chance of occurring in first cousin relations. There's still a direct blood relation there.
Unless it's repeated over several generations, the risk is fairly small.
But there's still a risk. I wouldn't call it "fairly small" either, in fact, incests INCREASE the chances of biological defects at more than a fairly small margin. It doesn't matter if it's not repeated over several generations, the risk is still there. Of course it doesn't happen to every child born through incestuous relationships, but it's still a very harmful risk. Not even just biological defects btw, other defects may occur. Let's not forget that you're combining the same genes to make up the genetic material, so if both parents have the same gene for a certain disease, which is going to be fairly common when the sexual relationship is between family members, you're heavily increasing the risk of the child having the same disease. In some cases, you're doubling the risk.
Of course, the more distant the relative, the less the risk, but it's still there, even with very distant relatives.
A great read on the subject is available
here, backed by various interesting pieces of literature.