Alien having a baby with a human

there should be a 0% chance for a full blooded alien unless you get abducted, or breed two aliens. I was pretty sure there was 100% chance of a half alien aka some powers but no disguise. 1/2 alien is a specific thing in this game that you can be and is unique to aliens (no half vampire, 1/2 mermaid, really your only true hybrid) when a 1/2 alien has a baby with a human they no longer have any alien abilities but there is a 50/50 chance they will get the alien skin. Since those "special" skin tones can't be mixed with the other parents, and recessive genes don't seem to be thing, there is a 50/50 chance they will pass the skin town down to the next generation but they will no longer be aliens with alien powers. I have done a couple of legacy families where the patriarch is a scientist who has a alien baby and these were my findings. Currently doing when where matriarch is full alien and all her kids were 1/2 aliens. I really do wish there was recessive traits though because I would love to see one of her great grandkids pop up with blue skin even though their parents do not have blue skin. If the matriarch's grandchildren, 2 were human colored and 1 was blue and of the great grandchildren, currently the blue child has one human colored child and one blue child and the human colored children have human colored children.