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The conspiracy / point of debate being a promotion of "random mutations" and "natural selection" being the entirety of evolution, while side stepping hereditary traits being a limit on how random those mutations can be, as illustrated by Tyson's tweet.
originally posted by: AnuTyr
yeah kinda but not really. Micro-organisms build the complexity of the world. Not mating. lol.
Enviroment forces the micro-organisms to evolve.
And when those things change it causes diseases.
I don't think Darwin could of imagined a whole plague could change a species in a couple generations and wouldn't exactly be *gradual* so much as a forced change.
Niches are created which then breed and carry on their legacy. It's not so much the organisms wanted to change that way it's that the environment becomes hostile forcing everything to change a long with it.
Darwin had it sorta right but not exactly.
he put more faith into Cross breeding than understanding how a global temperture change or drop in oxygen would shift all the life that is there. It would be to hard for his brain to come to such a realization several decades ago. I said several. I could of said Dozens i guess but 150 years isn't very long.
It's like a bat of the eye. It's like a sea turtle dying and having it's life flash before it's eyes.
He did pave the wave for genetics tho. Besides that. the dude was not 100% correct.
And don't forget Dawins, * only the strongest will survive* mentaility. He had litte understanding in symbiotic relationships and how they build up the complexity we see today....
Such as ants protecting trees and plants. And plants altering their physical appearance as well as providing all the nutrients the ants would need to survive so the ants can defend the tree lol.
However Darwin bought up some trouble for us by making it seem like we can just slay things and the enviroment will just cope with it.
originally posted by: peskyhumans
How can there be a whole species of white tiger if the gene for it's white coloration is not a dominant gene? If what he says is true, that white tigers bred with other tigers lose their white coloration, how could the white coloration of an entire species be the result of evolution? Interbreeding between the ancestors of white tiger should have eliminated the white coloration entirely.
originally posted by: peskyhumans
Instead of attacking the dumb chicken and egg quote in the OP,
I would rather have more discussion about the question he raised about white tigers. How can there be a whole species of white tiger if the gene for it's white coloration is not a dominant gene?
If what he says is true, that white tigers bred with other tigers lose their white coloration, how could the white coloration of an entire species be the result of evolution? Interbreeding between the ancestors of white tiger should have eliminated the white coloration entirely.
Any complex multicellular organism that reproduces sexually is governed by hereditary traits. An organism that has a trait that is not shared by the general population that then breeds with the general population will produce hybrids, provided the variation in genetics is not great enough to prevent viable offspring, and will eventually see that trait "bred out of the line". We see this effect in White Tigers. To preserve the trait that gives them their coloration, they must be in-bred, which has been declared inhumane and banned in most countries. If they are bred with the general population, they produce off colored hybrids and the next few generations see the trait suppressed / eliminated.
a reply to: TheTengriist
Actually, "hybrid" is a perfectly valid term. It doesn't just mean "offspring of two species." it means any offspring generated by a combination of two different things in general. So yes, the outbred offspring of white and non-white carriers are hybrids between the two color variations.
In biology a hybrid is an offspring of two animals or plants of different breeds, varieties, species, or genera.
There is still quite a bit of confusion in the general media and among some media icons about this. Neil deGrasse Tyson tweeted, "Just to settle it once and for all: Which came first the Chicken or the Egg? The Egg -- laid by a bird that was not a Chicken". To which several of us replied that you cannot breed a not-a-chicken with a chicken, so there would be no way to produce offspring. If you were to have an almost-a-chicken and breed it with a chicken, you'd still get hybrids, which could result in the new traits being bred out of the line.