Human-Alien cross breeding? Possible? Implausible?

[murphy7801]

Possibly, but only if the aliens reproduce via meiosis.

i could go look up what they say in the game there quite detailed on it

 

[DarkRyter]

Well, perhaps, if by chance, we are similiar enough to reproduce, the lack of being the same species would mean the offspring could not reproduce.

 

[MrSnugglesworth]

1. Why would you want to get freaky with an alien
2. Species can't produce offspring that can reproduce. e.g.the mule and the liger
3. DNA splicing? probably wouldn't work like it does in Sci-Fi films

1.I would want to get freaky with a Liara alien.

2. Who cares? Its a hot Liara alien.(Can't remember the name. Asoka or something)

3. Not really a question, but hell I hope it works.

 

[murphy7801]

asari

 

[Conveant0]

I'll stick with my earlier point, that horses and donkeys are at least exposed to the same environments including microbial life and chemical compounds in air quality and composition. In comparison to a human and alien, which will of evolved under different sets of rules for differnt combinations of gasses respired, other animal species (More than likely wouldn't you say) for diseases(?) to mutate from (Our swine flu or avian flu, their own version of animal/plant-human viral spread... yes I said plant).

Could it be possible that in a large amount or extreme cases of variations between two species could be too much to find a common ground for any result to survive on comfortably?
AKA, food eaten, as the parents bodies will have evolved to certain foods will they not have? If not this, then different types of air (Human-Oxygen, Alien-Nitrogen(?)

 

[murphy7801]

I'll stick with my earlier point, that horses and donkeys are at least exposed to the same environments including microbial life and chemical compounds in air quality and composition. In comparison to a human and alien, which will of evolved under different sets of rules for differnt combinations of gasses respired, other animal species (More than likely wouldn't you say) for diseases(?) to mutate from (Our swine flu or avian flu, their own version of animal/plant-human viral spread... yes I said plant).

Could it be possible that in a large amount or extreme cases of variations between two species could be too much to find a common ground for any result to survive on comfortably?
AKA, food eaten, as the parents bodies will have evolved to certain foods will they not have? If not this, then different types of air (Human-Oxygen, Alien-Nitrogen(?)

why would breath nitrogen that doesn't make sense ammonia on the other more feasible

 

[RyQ_TMC]

OK, one answer to a lot of replies here: aliens would not be necessarily DNA-based. With a broad enough definition of 'life' we could say we've already encountered non-DNA based life (RNA viruses and prions). And even if we exclude those (both cannot reproduce by themselves), there are plenty of scientific models for non-DNA based extraterrestrial life.

Bottom line is, unless the aliens in question were actually descendants of spacefaring humans (or the other way around), there'd most likely be no way to reproduce. They'd be lifeforms from a completely different ancestor, and even if they were carbon-based DNA lifeforms, there'd still be a lot of minor details, from amino acid structure and conformation to chromosome structure and number (and the existence of chromosomes in aliens) which would easily render us incompatible. Evolution does not follow a predefined plan, and even if the planet was incredibly Earthlike astronomy- and geology-wise, evolution would not follow the same course.

Heh, sorry for textwalling the thread. Anyhoo, methinks there's be no way for humans and aliens to reproduce, but sex will find a way. It always does. The Internet provides us with copious proof.

EDIT:

why would breath nitrogen that doesn't make sense ammonia on the other more feasible

It does. Life in a nitrogenic atmosphere with insignificant oxygen content could be possible, if metabolic reactions were to be based on reduction of nutrients rather than oxidation. A model for nitrogen-based life was developed decades ago. For all we know, it is purely hypothetical, but works in theory.

 

[Zykon TheLich]

Number of other species humans can interbreed with on this planet = 0

Likelihood of being able to interbreed with an alien species that evolved seperately on a completely different planet = pretty fucking low.

 

[mike_ironfist]

Reproduction? No. Not unless the aliens we met were also reproducing on the basis of combining DNA AND on top of it had the same number of chromosomes. While the first half is likely, the second part is not.

However, sexual gratification across any number of species is entirely possible and plausible, so I could see humans and aliens having sex for pleasure, although depending on what the aliens looked like, it could be entirely creepy.

 

[murphy7801]

Number of other species humans can interbreed with on this planet = 0

Likelihood of being able to interbreed with an alien species that evolved seperately on a completely different planet = pretty fucking low.

well it depends they might i giant virus and rape with tentacles

 

[PersianLlama]

1) If there are aliens, they likely are NOT AT ALL SIMILAR TO HUMANS
2) No.

 

[Fronken]

Now where's that link to those scientists who believe Asians to be the off-spring of our ancestors being "visited" by aliens...

Damn, cant find it, its so hilariously retarded, Anyways, on topic:

I'd have to wager No, dont see any reason why we should be able to mate with aliens even if they were humanoid in form, for the same reason we cant impregnate monkeys, it just doesnt work.

 

[impactsickness]

lets try and find aliens first okay?

 

[murphy7801]

actually there is one thing that may mean humans can breed in unlikely sense there some possibility (as in we never know in are life times) the life wanst created on earth a few cells on a asteroid that crash to earth may cause it that dna had come from some where so if that some where evolved into something who knows

 

[Fronken]

If you have sex with a horse do you get horsehuman? Nope.

It would depend entirely on whether they were genetically similar enough to us.

Actually, no.

Chimpanzees are 98.5% identical to us humans when it comes to DNA, yet we cannot impregnate them, so if there were to be any chance of cross-breading going on they would have to be over 98.5% identical, and the odds of alien lifeforms being identical to us just sounds stupid, no matter if you're a sci-fi buff or a scientist.

 

[Conveant0]

Number of other species humans can interbreed with on this planet = 0

Likelihood of being able to interbreed with an alien species that evolved seperately on a completely different planet = pretty fucking low.

well it depends they might i giant virus and rape with tentacles

Sorry Murphy, I think there was something amiss in that sentence mate, repeat?

why would breath nitrogen that doesn't make sense ammonia on the other more feasible

It does. Life in a nitrogenic atmosphere with insignificant oxygen content could be possible, if metabolic reactions were to be based on reduction of nutrients rather than oxidation. A model for nitrogen-based life was developed decades ago. For all we know, it is purely hypothetical, but works in theory.

Cheers for that RyQ. To Murphy my statement still stands, if you prefer it then imagine I wrote Ammonia if you've nothing else to add which is constructive. I'm sure you can lurk elsewhere on the forum can't you?


Personal opinion, I'd doubt it myself, after reading the posts of others concerning chromosome structure and count, biological structure and my own idea of implausability.
Cheers for this.

 

[letsnoobtehpwns]

They would have to have similar genital to humans. The biggest question is, would you want to have sex with an alien?

 

[UsefulPlayer 1]

Now where's that link to those scientists who believe Asians to be the off-spring of our ancestors being "visited" by aliens...

O_O

But I'm Asian...

..........................

Anyhow, I'm totally down with alien women. But to have a child together? Probably not viable.

 

[Wafflestomper99]

I don't have an answer, but if we discover other intelligent life that look remotely like asari's, I will be one of the pioneers