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Baffling genetic barrier in some closely related species prevents interbreding
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Baffling genetic barrier in some closely related species prevents interbreding
Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.Tags: None
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I've heard of these before. IIRC they do interbreed, but the crossbreeds are weaker than either true breed. Thus there's selection pressure against interbreeding. What you've quoted suggests that being heterozygous for that DNA segment is bad news. Though if there's so little difference between the birds, I can't see how there can be much that would provide any breeding preference, so maybe there isn't any substantial barrier yet, it's just that the downside of doing so keeps the populations pure.
RoyJorge: Functional Complex Information is INFORMATION that is complex and functional.
mikewhitney: What if the speed of light changed when light is passing through water? ... I have 3 semesters of college Physics.
Mountain Man: First of all, the Bible is a fixed document.
Mountain Man: … this is how liberals argue these days, with labels instead of ideas.
Mountain Man on covid-19: We're talking about an illness with a better than 99.9% rate of survival.
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Subscribing so I can reread this later. I don't get it yet.
"He is no fool who gives what he cannot keep to gain that which he cannot lose." - Jim Elliot
"Forgiveness is the way of love." Gary Chapman
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Not totally new. I read something like this before concerning tropical birds, and the relationship between varieties, subspecies and closely related species, but was only observations in the wild and certain closely related groups did not appear to interbred.Last edited by shunyadragon; 08-25-2014, 06:07 PM.Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.
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Found one of the references, but the text or published paper:
2012 J. Dylan Maddox, “Inbreeding avoidance, genetic neighborhoods, and gene flow in a tropical bird with limited dispersal" Florida Museum of Natural History.
Still looking . . .Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.
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Originally posted by klaus54 View PostSo, Jorge was right all along.
Capital "E" Evolution is pure evil metaphysics.
I shouda listened to him,
K54"When the Western world accepted Christianity, Caesar conquered; and the received text of Western theology was edited by his lawyers…. The brief Galilean vision of humility flickered throughout the ages, uncertainly…. But the deeper idolatry, of the fashioning of God in the image of the Egyptian, Persian, and Roman imperial rulers, was retained. The Church gave unto God the attributes which belonged exclusively to Caesar."
— Alfred North Whitehead
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Dur!
"He is no fool who gives what he cannot keep to gain that which he cannot lose." - Jim Elliot
"Forgiveness is the way of love." Gary Chapman
My Personal Blog
My Novella blog (Current Novella Begins on 7/25/14)
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Originally posted by Jorge View PostYayyyyyyy !!!!!!! He's back !!!!!!!!!! Mr "S" himself !!!!!!!!! He was missed!
Jorge"When the Western world accepted Christianity, Caesar conquered; and the received text of Western theology was edited by his lawyers…. The brief Galilean vision of humility flickered throughout the ages, uncertainly…. But the deeper idolatry, of the fashioning of God in the image of the Egyptian, Persian, and Roman imperial rulers, was retained. The Church gave unto God the attributes which belonged exclusively to Caesar."
— Alfred North Whitehead
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Originally posted by phank View PostOne implication of this is, it could require amazingly small changes to trigger a speciation branching event. Something that causes slightly different coloration, pheromones, mating displays, etc.To say that crony capitalism is not true/free market capitalism, is like saying a grand slam is not true baseball, or like saying scoring a touchdown is not true American football ...Stefan Mykhaylo D
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