If they don't have human DNA, then they are not a person. And having a 'consciousness' doesn't make you a person either. I hate it when people think that they are the only beings with a consciousness, especially my teachers, they like to underline how 'special' that makes us. No it doesn't. Several other mammals have consciousness; elephants, dolphins, some monkey species,...
Though I should note that maybe it doesn't rely on the DNA for 100%. If it has the same brain structure/connections, if their brain works the same as ours (or close to), then they should be seen as a human.
This is kind of a difficult subject to me. Since I would say that humans wouldn't be allowed to control anything that has a consciousness. But does that make it okay to control beings that don't have a consciousness? Or because we think they don't have a consciousness? I mean, I keep my snake in captivity but actually, what gives me the right to do so? What gives anyone the right to take control of things that have their own will?
I believe that highly intelligent animals such as orcas and monkeys should be respected in their freedom.
If robots will start to 'develop' a consciousness (aka; when someone is stupid enough to turn these things into living beings) then it would be a crime to still treat them as an object.
A teacher once talked about this 'computer'. Apparently some scientists were experiencing with it, how they could 'give' it a consciousness, to 'remake' the human brain. But keep in mind... It will still be a 'computer'. By all means; there is someone who is literally stuck in a computer, they have a a consciousness, they can think, but they can't move. That's just cruel. (And yes, I am talking about a person now, since its a 'simulation' of the human brain, in a computer.)
The game 'Detroit; Become Human' is an amazing example of this topic. If there are some gamers who are interested in concepts like this, I would recommend it.
And in all honesty, if robots decided that we should all die; you can't really blame them for that.