I didn't say it made another species, I said it changed it.
But let's say that for some bizarre reason, a mutation creeps in that makes the cat have 6 legs.
And having six legs is a massive advantage, so that cat breeds, while the cats with 4 legs have trouble doing so. EVENTUALLY, there will be a bunch of 6 legged cats running around. Since the 6 legged cats have an easier time surviving, eventually, over thousands of years, and since they fill the same evolutionairy niche, they'll displace 4 legged cats.
Let's further suppose that there's ANOTHER mutation that causes these six legged cats not to have fur, and for some reason, the six legged, furless cats do better than their hirsuite counterparts.
Now you've got a bunch of hairless six legged cats running around.
Are they still cats if they all have six legs and no fur?
Mutations crop up all the time. Most are bad. They die, or don't breed.
Some are neutral. I'm sure everyone's seen a cat with an extra toe, they're fairly common.
A few are good. Those are the ones that cause improvements to occur. If being bald at a young age made it impossible to breed, eventually, there would be no bald people.
As it is, being bald at a young age makes it HARDER to breed, so there are fewer bald people than people with hair.
In the old days, being stupid made it harder to survive.
The number of stupid people declined.
Nowadays, it's not such a disadvantage, because our culture is soft on dumbasses, so stupid people are once again thriving.
But let's say that for some bizarre reason, a mutation creeps in that makes the cat have 6 legs.
And having six legs is a massive advantage, so that cat breeds, while the cats with 4 legs have trouble doing so. EVENTUALLY, there will be a bunch of 6 legged cats running around. Since the 6 legged cats have an easier time surviving, eventually, over thousands of years, and since they fill the same evolutionairy niche, they'll displace 4 legged cats.
Let's further suppose that there's ANOTHER mutation that causes these six legged cats not to have fur, and for some reason, the six legged, furless cats do better than their hirsuite counterparts.
Now you've got a bunch of hairless six legged cats running around.
Are they still cats if they all have six legs and no fur?
Mutations crop up all the time. Most are bad. They die, or don't breed.
Some are neutral. I'm sure everyone's seen a cat with an extra toe, they're fairly common.
A few are good. Those are the ones that cause improvements to occur. If being bald at a young age made it impossible to breed, eventually, there would be no bald people.
As it is, being bald at a young age makes it HARDER to breed, so there are fewer bald people than people with hair.
In the old days, being stupid made it harder to survive.
The number of stupid people declined.
Nowadays, it's not such a disadvantage, because our culture is soft on dumbasses, so stupid people are once again thriving.
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