From: "Robert Comer" 

> So the fertile offspring of a horse and a donkey is the same species?

There are so very few fertile that your guess is as good as mine.  And a
bigger question is if  it's a natural cross anyway. (would it happen in the
wild and would it be viable)

> Mule deer and whitetail deer?

I never heard of a cross between those two, natural or man assisted?

> Xiphophorus maculatus, Xiphophorus helleri, and Xiphophorus vaiatus are
> the same species?*

Something I've actually kept myself, and those 3 are *extremely* closely
related, and it could probably be argued that they are indeed the same
species with some slight variation.  They don't usually choose to
crossbreed (even among different color schemes of supposedly the same
species), but they aren't against the idea either. 

--
Bob Comer


"Bill Lucy"  wrote in message
news:MPG.1de57ba0a626eb1098972e{at}news.barkto.com...
> In article , email{at}from_Gary_Britt.org says...
>> If they can mate and produce fertile offspring, then they are the same
>> species.  If not.  They aren't.  Simple isn't it.
>
> So the fertile offspring of a horse and a donkey is the same species?
>
> Xiphophorus maculatus, Xiphophorus helleri, and Xiphophorus vaiatus are
> the same species?*
>
> Mule deer and whitetail deer?
>
> You demonstrate once again you have no idea what you are talking about.
>
> *fish, AKA platies and swordtails
>
> 
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