Incest and children.

[john_rodney]

Rather than asking people's opinions on the subject, it would be better to do some research.  Here is a place you can start:

https://en.wikipedia.org/wiki/Inbreeding

To give a specific example, in the case of first cousins breeding, it doubles the chances of genetic disorders compared with unrelated people breeding.

its 2% in normal realtions in incest its chances are 4% but direct blood line like sister mother brother father its 10%