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5/3/2015 3:30:50 AM
3
Do they cease to be fruit flies at on point and change into another bug after so many years?
English
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They would evolve after many years of adaptation
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That is just a hypothesis. If you are going to claim the fruit flies as examples, I want to see results. Show me a new insect that was once a fruit fly.
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http://evolution.berkeley.edu/evolibrary/article/evo_45 There you go.
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But they are still only fruit flies!
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They are a different species. Just like there are thousands of species of cockroach.
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Hypothetically.
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No, I'm asking, has it Literally, Actually happened?
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Not that I know of.
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Then how can it be used as an example?
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Because we can see the process happening.
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But the process is not permanent. If you look at Logic's link below, the fruit flies were subject to different diets, causing them to adapt. If the diets were normalized again, they would simply change back. How then can it be assumed that 'these many small changes over a long period of time causes a change in species' be true if the small changes are not even permanent.
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They adapt to fit their CURRENT environment, if you change the environment they adapt to fit the new environment, if you revert them to the original environment they will re-adapt to how they best survived in the old environment
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How can it not? I don't see the problem.
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If a creature has a minor change, but then changes back, how could it ever accumulate enough changes to become a new species?
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Edited by Demagogue: 5/4/2015 3:53:27 AMBy not changing back.
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Not a very scientific assumption.
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Explain.
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You would need to test or study on what is the basis for permanent adaptions and temporary adaptions. What are they, how do they come about, what are their uses or benefits from what was before? What are the odds that multiple changes could happen in a species? Could these changes cascade? At what point would we consider a creature to no longer be of the same species? When it could no longer mate with others of its original species? There are too many questions, dependent variables, and unknowns to simply assume that the adaptions would simply not revert.
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Why? The answer is obvious- the environment.
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Like he said, it takes a bit longer than a few years.
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But how much longer? The claim is that micro-evolution over a long period of time leads to a change in species. The example is fruit flies due to their short life span, but the studies and experiments show that the fruit flies are still fruit flies. How can anyone believe a claim that inter-species evolution occurs if there is no recorded results of such thing happening? How can it be a theory if it is still only a hypothesis?
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No such thing as "micro-evolution".
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Semantics. Micro being small and evolution being physical changes. Saying there is no micro-evolution is the same as saying there is no evolution. But like I said, it's semantics.
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There is only evolution. Therefor small changes are evidence for evolution.
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No, what he means is "micro evolution" is a fake term. Evolutionary theory never mentions "Micro and macro evolution". They are terms made up by creationists with no credibility whatsoever.
