In a conversation with my roommate about what fantasy races we would fuck, the science behind half-orcs and half-elves came up. Which made me think about other fantasy/scifi races, and the idea of half-breeds have become a lot rarer. There are no half-breeds in either BioWare properties; children of asari are always asari, human-elf fucking in Dragon Age always turns out human, and even though we know there's all sorts of fucking going on, there's never a half-quarian half-turian baby running around.

So I ask what the science behind it is? Is it relatively unlikely for cross-species pregnation, or are some of the races close enough at some biological level to support it? A donkey can fuck a horse and it makes a mule, and there's all sorts of fuckin' dogs out there, so could there be the possibility of a krogan-varren half-breed (Vrogan!)? It seems unlikely to me because all these different species grew up in completely different worlds, which goes even beyond biosphere or ecosystem.

For the record, I would fuck anything that didn't resemble a bug. I think the ending of Fear 2 was supposed to make me uncomfortable, but I think they didn't expect that naked ghost girl would turn me on.

Quarians can't exactly fuck other species and there aren't enough Krogan women to go around for the other races. Turian spunk is acidic to humans and Asari don't really have sex in the traditional sense. Interspecies erotica is probably way different in the future.

You got horny for Alma..Eeeuuuuwwwwwwwwww!!! I don't think she even uses toilet paper, much less any other hygiene. The serious answer for Mass effect is no, how is our dna supposed to match up with whatever they got..unless the star trek concept of a previous seed race explained most of the 2 arms, 2 legs 2 eyes, one head, and of course conveniently placed reproductive organs with the sexy races. Even them probably not do to extra terrestrial specialisation. But you know what? In that universe they will be a humping away to the upmost max to prove me wrong.

Ok, the science behind this would be based on chromosomes. We can safely assume that all these races have a genetic code in the same way we and other animals which actually exist do - so current knowledge of inter-breeding is applicable. In taxonomy, when thing 1 and thing 2 can no longer both breed and birth fertile offspring then they are considered separate species. In the case of a mule (offspring of a donkey and a horse) while being the offspring of two separate species it is infertile as it is born with 63 chromosomes. This is because the parent animal's have differing numbers of chromosomes leaving the mule without a matching pair and ergo infertile.  
 
So it isn't impossible for there to be inter-breeding in the mass effect universe but it's very unlikely and even less likely that the offspring would be reproductively viable. The codex entries are always fairly grounded in science, so I bet someone at Bioware has given this sort of idea considerable thought.

@PenguinDust said:

If it wasn't, there would be a lot more donkey-humans running around Tijuana.

Science!

I wouldn't think so, but I'll give Tali a mass effect if you know what I'm saying.

But all kidding aside, no you couldn't breed with aliens, it just wouldn't work. It'd be fun trying though.

Nah, it's not Star Trek where aliens are basically humans with pointy ears or nose wrinkles.

So I ask what the science behind it is? Is it relatively unlikely for cross-species pregnation

@sickVisionz said:

@Brodehouse said:

So I ask what the science behind it is? Is it relatively unlikely for cross-species pregnation

Yes. The more genetically dissimilar you are, the more unlikely a natural hybrid would be. Humans can't impregnate monkeys and our DNA is 95%-98.5% identical to theirs so that should give you a good idea at the level of genetic similarity needed.

How do scientist know?

Have they done tests and tried to fuck monkeys?

@sickVisionz said:

@Brodehouse said:

So I ask what the science behind it is? Is it relatively unlikely for cross-species pregnation

Yes. The more genetically dissimilar you are, the more unlikely a natural hybrid would be. Humans can't impregnate monkeys and our DNA is 95%-98.5% identical to theirs so that should give you a good idea at the level of genetic similarity needed.

How do scientist know?

Have they done tests and tried to fuck monkeys?

@sickVisionz said:

@Brodehouse said:

So I ask what the science behind it is? Is it relatively unlikely for cross-species pregnation

Yes. The more genetically dissimilar you are, the more unlikely a natural hybrid would be. Humans can't impregnate monkeys and our DNA is 95%-98.5% identical to theirs so that should give you a good idea at the level of genetic similarity needed.

How do scientist know?

Have they done tests and tried to fuck monkeys?

Thing is that you have this stem from a conversation about orcs and elves and shit.  But in a place like the world of Elder Scrolls, these species are from the same planet.  So there is hope since the species share the same kind of organic material and DNA is made of the same stuff.  As for aliens, who knows what they are made of, if they use DNA for genetic material, and whether or not it is possible to have sex with them.  Quarians are disgusting, same as krogans.  Asari are sexy.  Rule being that girl on girl action is still hot in the future, but not with Quarians.

@TheHBK: My copy of Krogasm says krogan are hella sexy.

Sure, hybridization could always be possible, but most likely useless. Many hybrids are infertile. http://en.wikipedia.org/wiki/Hybrid_(biology)

To quote a song "Mutant Generations''
 

We're closer to a radish than a Romulan,
An unrelated creature of a foreign sun.
How can a Klingon/human couple mate?
She's closer to the gak that squirms upon her plate.

In a conversation with my roommate about what fantasy races we would fuck, the science behind half-orcs and half-elves came up. Which made me think about other fantasy/scifi races, and the idea of half-breeds have become a lot rarer. There are no half-breeds in either BioWare properties; children of asari are always asari, human-elf fucking in Dragon Age always turns out human, and even though we know there's all sorts of fucking going on, there's never a half-quarian half-turian baby running around.

So I ask what the science behind it is? Is it relatively unlikely for cross-species pregnation, or are some of the races close enough at some biological level to support it? A donkey can fuck a horse and it makes a mule, and there's all sorts of fuckin' dogs out there, so could there be the possibility of a krogan-varren half-breed (Vrogan!)? It seems unlikely to me because all these different species grew up in completely different worlds, which goes even beyond biosphere or ecosystem.

For the record, I would fuck anything that didn't resemble a bug. I think the ending of Fear 2 was supposed to make me uncomfortable, but I think they didn't expect that naked ghost girl would turn me on.