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Originally posted by Jerry Smith
Don't get angry Nick.
Originally posted by randman
Come on Jerry, the fact this bacteria hasn't changed in 3 biliion years pretty much blows evolutionist presumptions away as do other species exhibiting stasis.
Stasis is the opposite of what evolution predicted, and has not yet been adequately explained by evolutionists though some do try to deny its existence.
Originally posted by randman
Come on Jerry, the fact this bacteria hasn't changed in 3 biliion years pretty much blows evolutionist presumptions away as do other species exhibiting stasis.
Stasis is the opposite of what evolution predicted, and has not yet been adequately explained by evolutionists though some do try to deny its existence.
Originally posted by randman
I never said evolution had to be at a constant rate, so don't interject an extreme straw man here.
What I do state is that stasis is the opposite of evolving, and when stasis occurs over millions and even billions of years, I have a hard time with the argument that conditions remained so much the same that there was no selective pressure.
Originally posted by Jerry Smith
In other words, could you ask yourself whether the environmental niche occupied by cyanobacteria could be a wide enough range of characteristics that there have been no changes to it that would impact cyanobacteria over the entire extent of their range?
Originally posted by npetreley
1. You're deliberately leaving out mutation and treating this as if only selection is involved. Hey, if you want to play "leave out the data" we can have some very stimulating volleys on who can be the most intellectually dishonest, but it won't have any content worth reading.
2. Speaking of which, by all means please argue that the enviornment has provided a nearly constant level of selective pressure on cyanobacteria for 3 billion years. The consequences of such an assertion would be marvellous to explore.
Originally posted by chickenman
of course you are forgetting that we can't actually measure the rate of mutation and genetic change between ancient and modern cyanobacteria, becuase we don't have the DNA of its precambrian forms.
Originally posted by Jerry Smith
One individual or community of cyanobacteria may have a mutation. The mutation may or may not confer advantage for that individual or community that is makes it more fit for a certain range (narrower than the over-all range of cyanobacteria). If it does, we can expect the line stemming from this individual or population to diverge from the broader group of cyanobacteria.
Originally posted by Jerry Smith
At the rate of reproduction of the cyanobacteria as a whole, we can always expect large populations that are non-mutant to continue in the broader range of cyanobacteria. Preserving the non-mutant line.
Originally posted by Jerry Smith
As long as the basic cyanobacteria physiology is well suited to the environmental constraints of its own particular niche, and as long as its niche isn't drastically altered in a way that will impact the cyanobacteria's simple function, selective pressure does remain to keep cyanobacteria simple. ... As long as there is water and light, there will be selective pressure on simple photosynthesizers to keep being simple photosynthesizers.
Originally posted by npetreley
You are implying that selective pressure is somehow magically preventing mutations from occurring, and that's pure unadulterated bullhockey.
Selective pressure is what (theoretically) may contribute to a mutation being more or less successful, but it doesn't prevent the mutations from occurring.
Yet we see no evidence whatsoever that mutations occurred, beneficial or not.
The evidence just ain't there, and (according to your dating system) it has had 3 billion years worth of chances.
Originally posted by npetreley
You are implying that selective pressure is somehow magically preventing mutations from occurring, and that's pure unadulterated bullhockey. Selective pressure is what (theoretically) may contribute to a mutation being more or less successful, but it doesn't prevent the mutations from occurring.
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