Crosswords8 mins ago
different races of people and breeds of animals
If there wasn't any mating of people of different races or possibly breeds of dogs for example, would there come a point when we/they would become different species?
I would think so, but how many generations would this take?
I would think so, but how many generations would this take?
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No best answer has yet been selected by mollykins. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.HH I said IF they're not healthy (in other ways apart from being unfertile).
Just that if unhealthy people get fertility treatment, their child is likely to be unhealthy aswell which is not helping society in the slightest, plus there's plenty of orphaned children that need loving homes already. people treat it as if having children is a right but a small minority of people don't deserve them.
Just that if unhealthy people get fertility treatment, their child is likely to be unhealthy aswell which is not helping society in the slightest, plus there's plenty of orphaned children that need loving homes already. people treat it as if having children is a right but a small minority of people don't deserve them.
But the small minority that 'don't deserve them' are not necesarily the ones who can't have them. My father had children, he didn't deserve to be breathing never mind about being a parent but I have charming friends who have gone the IVF route who have still not managed to have kids. Adopting is not always as easy as it could be, there are many reasons people are turned down, some quite trivial, so should all of these worthy couples really remain childless? I assume you don't mind medical interventions in other matters?
I am unsure the definition of a species is well established. I used to think it mean there could be no cross breeding, but of course we know with closely related species this can happen. I'm unsure if the offspring is always infertile though. That said the only way new species come into existence is for an existing species to branch into two, so it seems to me ensuring two groups don't meet up to swop genes, it is a possibility they will diverge until they can be considered different species.
I hope I haven't misunderstood your question, Molly, but the emergence of difference species is not dependent on any form of cross-breeding. Random mutations within a single species, followed by natural selection, can produce a new species when the mutations have reached such a level that mating with the original species is no longer possible.
But I have a feeling that you knew this already, which is why I'm a little hesitant.
But I have a feeling that you knew this already, which is why I'm a little hesitant.
Molly I'll say it again.. survival of the fittest always applies
You appear to have misunderstood what 'fittest' means in this context. It doesn't mean the most physically well developed it means the best suited to it's environment. Additionally the way these things work isn't always obvious, If there was a gene for caring and compassion in a society then members of the society would help one and other to survive and the members of that society might do better and produce more offspring than one that didn't have the gene. A side effect might be that the compassionate society looked after its old and disabled members too as well as it's infants and could afford to do so because the society worked better.
You appear to have misunderstood what 'fittest' means in this context. It doesn't mean the most physically well developed it means the best suited to it's environment. Additionally the way these things work isn't always obvious, If there was a gene for caring and compassion in a society then members of the society would help one and other to survive and the members of that society might do better and produce more offspring than one that didn't have the gene. A side effect might be that the compassionate society looked after its old and disabled members too as well as it's infants and could afford to do so because the society worked better.
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