>then the chance of recessive genetic disorders greatly increases It will increase somewhat, but not 'greatly'. At least, I would be interested to see some act

>then the chance of recessive genetic disorders greatly increases It will increase somewhat, but not 'greatly'. At least, I would be interested to see some actual data on this for the case of the children of half siblings. For cousins the additional risk is very small: https://www.nytimes.com/2002/04/03/health/no-genetic-reason-to-discourage-cousin-marriage-study-finds.html https://www.nytimes.com/2002/04/03/health/no-genetic-reason-...