Quote:
Originally Posted by BroGary
horses, donkeys, mules, all basically the same species, but to actually think that man evolved from ape-like creatures is so far out as to be incredible.
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Then why do the horse/donkey hybridization produce infertile offspring? If they were the same species or "kind" - the Bible says that they should continue to produce "after their kind."
Genesis 1:25.
It's because of a phenomena involving "Genetic Drift." The ancestors of the donkeys lived and reproduced in geographic isolation for thousands of years. Meanwhile, the ancestors of the horses did the same.
Though both species shared a common ancestor, they "
drifted apart" genetically to the point that they could no longer produce fertile offspring when they were brought back together. This is an example of evolution "in the works." If human beings had not transported the two species back into proximity with one another and cross bred them they would have continued to drift even further apart.
Since they are unable to produce fertile offspring (though there is the occasional and very, very rare fertile mule) the process of speciation between horses and donkeys may already be permanent. They have evolved into two different "kinds" that produce offspring "after their own kind" now.
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