regarding inbreeding /outbreeding here is a online book on the subject
http://www.questia.com/PM.qst?a=o&d=28106253

Keep in mind humans have been through a fairly tight founder effect since we are probably under 10K generations old and only in recent 100K years have really flourished. Heavy selection pressure from disease ,war, top male polygyny, long life cycle which amplifies benefits or negatives of defective/beneficial genes have probably kept the gene pool pretty clean at least up to the last 200years. Since then health/medical science has found more ways to help preserve defective genes so humans have recently started to genetically degenerate but overall we are pretty safe with regards to inbreeding since the entire human species is effectivly inbreed already, and has few severe recessive disorders.

It's funny but smoking has actually increased the health of the overall population ! By killing thousands of people who harboured lung-cancer-genes. Descendents of people who smoked and survived to have children are genetically more immune to lung cancer, and probably other cancers too. This is the real meaning of the saying "whatever does not kill us makes us stronger".
Big unacknoweleged thankyou to the tobacco companies here keep up the good work.

I doubt the baby will survive for very long.

I say send the freak to the circus

You've obviously missed the thread on getting into heaven, the world is only 10,000 years old and Dinosaur's roamed with Jesus and the apostles. So as far as humans really flourishing for 100K years you seem to be way off the mark.

 The dinosaurs did roam around with Jesus and apostles lol. A dinosaur ate Jesus and his apostle, lol.

This is what ruthless pollution and nuclear power does to people.

But pretty nice of the people. In America people would take the piss and probably put the baby on some game show.

It can only be a malformed parasitic twin