Crocaducks? Why isn't evolution more random?
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Crocaducks? Why isn't evolution more random?
I'm not a expert here so I'll throw this question in the ring to see what those who are make of it? Seems species only mate along the lines of near relatives or closely related species? Why? Surely it would be a advantage for even distant species with common genes to produce offspring even if few survived? or any?
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Re: Crocaducks? Why isn't evolution more random?
Oh dear.
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Re: Crocaducks? Why isn't evolution more random?
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Re: Crocaducks? Why isn't evolution more random?
Consider mating a tank and an aircraft carrier. This would be easier than "matching up" the genes for a hippo-canary cross.
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Re: Crocaducks? Why isn't evolution more random?
If it doesn't fit, you must-a quit?
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Re: Crocaducks? Why isn't evolution more random?
Yep. Considering the incredibly close fit the genes must achieve is enough to kill the OP. Look at the difference between humans and chimps, <5%, and see how different we are. If a croc and a duck tried to mate how big would the difference be?tattuchu wrote:If it doesn't fit, you must-a quit?
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Re: Crocaducks? Why isn't evolution more random?
A virus can cross transfer genes between species. It probably only happens rarely, and even more rare would it transfer something of a useful competitive advantage. Though possible very common in bacteria.Scrumple wrote:I'm not a expert here so I'll throw this question in the ring to see what those who are make of it? Seems species only mate along the lines of near relatives or closely related species? Why? Surely it would be a advantage for even distant species with common genes to produce offspring even if few survived? or any?
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Re: Crocaducks? Why isn't evolution more random?
It's the chromosomes. We do not have the same number as chimpanzees. Horses and mules do not either. Look it up in wiipedia. The offspring are nfertile due to this mismatch.
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Re: Crocaducks? Why isn't evolution more random?
Does that change the host species or is it just baggage?Tyrannical wrote:A virus can cross transfer genes between species. It probably only happens rarely, and even more rare would it transfer something of a useful competitive advantage. Though possible very common in bacteria.Scrumple wrote:I'm not a expert here so I'll throw this question in the ring to see what those who are make of it? Seems species only mate along the lines of near relatives or closely related species? Why? Surely it would be a advantage for even distant species with common genes to produce offspring even if few survived? or any?
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Re: Crocaducks? Why isn't evolution more random?
Remember this little guy?Gawdzilla Sama wrote:Does that change the host species or is it just baggage?Tyrannical wrote:A virus can cross transfer genes between species. It probably only happens rarely, and even more rare would it transfer something of a useful competitive advantage. Though possible very common in bacteria.Scrumple wrote:I'm not a expert here so I'll throw this question in the ring to see what those who are make of it? Seems species only mate along the lines of near relatives or closely related species? Why? Surely it would be a advantage for even distant species with common genes to produce offspring even if few survived? or any?
http://en.wikipedia.org/wiki/Elysia_chlorotica
It's a separate species. Though I think it may be the only non-single celled organism known that has acquired something useful through lateral gene transfer found so far.
A fun tangent if you think about it is that though life may have difficulty surviving space conditions as in the panspermia theory, but a virus might and could transfer truly alien genes to an organism.
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Re: Crocaducks? Why isn't evolution more random?
You admit that's the only one we know of. Thanks.
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Re: Crocaducks? Why isn't evolution more random?
We've never really looked that hard, and not everything is as obvious as a photosynthetic sea slug. I don't even think it was thought possible until that discovery.Gawdzilla Sama wrote:You admit that's the only one we know of. Thanks.
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Re: Crocaducks? Why isn't evolution more random?
We have this huge laboratory, called "a planet", and if crocaducks were at all likely on any scale we'd have found some signs of them by now. (Insert lame bullshit about "we haven't found every yet!" here.)Tyrannical wrote:We've never really looked that hard, and not everything is as obvious as a photosynthetic sea slug. I don't even think it was thought possible until that discovery.Gawdzilla Sama wrote:You admit that's the only one we know of. Thanks.
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Re: Crocaducks? Why isn't evolution more random?
Or if they were everywhere we'd never notice them. Aren't whales just giant aquatic elephants?Gawdzilla Sama wrote:We have this huge laboratory, called "a planet", and if crocaducks were at all likely on any scale we'd have found some signs of them by now. (Insert lame bullshit about "we haven't found every yet!" here.)Tyrannical wrote:We've never really looked that hard, and not everything is as obvious as a photosynthetic sea slug. I don't even think it was thought possible until that discovery.Gawdzilla Sama wrote:You admit that's the only one we know of. Thanks.
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Re: Crocaducks? Why isn't evolution more random?
"(Insert lame bullshit about "we haven't found every yet!" here.)"
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