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Posts Tagged ‘beagle coydog’

Ken Ham is known for using the dog family to defend the biblical concept of kind. After all, domestic dogs vary so much but can interbreed and produce fertile offspring, which they can also do with wolves (their wild ancestor), coyotes, and golden jackals.

So all these different animals must represent the dog kind, right?

Well, very early in the debate from last night , Ham went for the dogs again, comparing the different species and breeds of the genus Canis to Darwin’s finches. Darwin’s finches are more less divergent in morphology than all these dogs are, so they both must represent the respective dog and finch “kind.”

The problem is that all the weird morphology that exists in dogs is really nothing more than the selection pressures that have occurred since domestication. Domestic dog skull vary more than all the other species in the order Carnivora. That means that domestic dogs have skulls that diverge more than the differences between those of house cats and walruses. It is now thought that tandem repeats may play a role why dog heads have been able to become so diverse so rapidly through selective breeding, which is really nothing more than a really weird aspect of the dog genome.  Domestic dogs actually don’t vary that much from each other, and they also don’t vary greatly from wolves either, which is why they still have to be classified as Canis lupus familiaris.

Ken Ham bathers on how all these Canis were interfertile and thus the same kind, but here’s a challenge I guess he didn’t think about.

These two animals look very similar, and I’m sure that Ken Ham would say they are the same “kind.”

canis latrans

black backed jackal

If you didn’t know any better, you’d say that these two animals were the same speces, and if you were a creationist, you’d definitely say they were the same “kind.”

But if all living things on the earth now are all derived from an ancestral and clearly interfertile ancestral pair on the ark, then why can’t these two animals interbreed?

Yes.

The animal in the top photo is a North American coyote. It actually can interbreed with domestic dogs and wolves, and it has been bred to the golden jackal, which is actually far more closely related to the wolf and coyote lineage than the other jackals.

Indeed, there are two jackals that are found only in Africa that are not interfertile with the rest of the genus Canis. These two are the black-backed and side-striped jackals, which are even more divergent from the rest of the genus Canis than African wild dogs and dholes are.

The animal below is a black-backed jackal, and in Southern and East Africa it is ecologically quite similar to the Western and Latin American populations of coyote.

Because black-backed and side-striped jackals are genetically that distinct from the rest of the “dog kind,” then Noah surely would have had to have brought along a separate jackal kind.

But wouldn’t an all-knowing creator just ask Noah to bring the dog kind and populate Africa with an animal deriving from that ancestral dog kind? Having to put another pair of dog-like creatures on that already crowded boat seems like an awful waste. Kennel space was pretty limited.

Why go at it with such a divergent animal?

Most people don’t realize that these two endemic African jackals are so different from the rest of the genus Canis. Most have heard that golden jackals cross with dogs, and there is an assumption that all of these animals are very closely related.

They aren’t.

But if you were to play on this kind game a bit more, you’d think that these two animals would interbreed, and that there would be no way to breed a cute little dog like a beagle to a coyote. A black-backed jackal would be a much more logical mate, right?

beagle

 

But there have been several studies that have crossed laboratory strain beagles with coyotes (like this one: coyote beagle).

coyote beagle mated pair

 

The photo above is the male coyote protecting his beagle mate.

Here are their descendants:

beagle coydogs

Beagles and coyotes would clearly be part of the same kind, but coyotes and black-backed jackals would not.

But you’d never be able to guess that solely by looking at the animals.

And this is where the entire concept of “kinds” falls apart.

We have many different and often nasty debates about the taxonomy and classification of species, but we have these debates because we have some idea of what a species is.

The same cannot be used for the term “kind.”

A kind is really whatever one thinks it should be. It’s an ad hoc definition, one that is squishy and malleable, which means that it is perfect for people who like to misrepresent facts to twist around however they would like.

It’s precisely the sort of thing creationists like to use to bamboozle the science-illiterate public.

 

 

 

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