

similar DNA is bad actually, the whole point of sexual reproduction is to increase diversity to make the population as robust as possible. If you have a ship full of clones all it takes is one virus/bacteria/fungus mutating in just the wrong way and everyone will get infected.
Like, this is why we got a new type of banana some decades ago, it’s all giant monocultures which is hilariously vulnerable to disease.




i don’t think it would even be that much of a concern, really. Not only can one person have multiple children (so you can do one surrogate and one genetically yours), but there are plenty of people who’d just be happy they get to give birth to their child and couldn’t care less about genes.