Indeed, my dad had me and my sister with our mum and still together now. I've had two kids and plenty of relationships, none seem to be lasting, although my sisters is lasting but no kids. My son won't have either, but I do hold hope for my daughter.
As you can tell autism in my family is genetic and previous people such as my grandad and great grandad also were suspected of having autism, but didn't get diagonised due to the fact they were high function and this is going back a few generations so if my ancestors could anyone can. I won't say it's easy but it's possible.