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To: C19fan

How is this possible? I was taught that two different species, even though close enough to produce offspring, the offspring will be sterile.
Horse+donkey= sterile mule.
Cow+bison= sterile cattlow.


13 posted on 07/25/2017 8:43:45 AM PDT by Ruy Dias de Bivar
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To: Ruy Dias de Bivar

http://www.slate.com/articles/news_and_politics/explainer/2010/05/pizzly_bears.html

If the two species broke off from a common ancestor relatively recently they can produce fertile offspring. Horses and donkeys separated too long ago to produce fertile offspring.


15 posted on 07/25/2017 8:48:25 AM PDT by C19fan
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