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Evolution would not occur if there is no genetic variation within a population, no selection pressure, or if there is no reproduction and passing on of genes to the next generation.

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5mo ago

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Is evolution slow or fast?

Evolution can occur at different rates depending on various factors such as the generation time of the organism, environmental pressures, and genetic variability. In some cases, evolution can be slow, taking thousands to millions of years for noticeable changes to occur. In other cases, evolution can happen relatively quickly, especially when organisms face changes in their environment that require rapid adaptation.


What A scientist makes the argument that she has found DNA evidence that shows that evolution does not exist. What would her evidence have to show for her to be correct?

For a scientist to argue that evolution does not exist based on DNA evidence, her findings would need to demonstrate that genetic mutations do not occur, that species do not share common ancestry, and that there is no evidence of natural selection influencing genetic variation over time. This would contradict the vast body of scientific evidence supporting the theory of evolution.


What must happen in order for evolution to exist?

Without heredity what use would there be to selection and why evolution? Just take beneficial mutations in the germ line for example. No heredity and nothing to enter the populations gene pool and no evolution. No heredity and there would be no variation in populations and the first environmental challenge would carry your population to extinction.


How would you use evolution natural selection adaptation and fitness in a sentence?

An important mechanism in evolution is natural selection, which allows populations to develop adaptations to changing circumstances based on the fitness landscape of the environment. Nah, still doesn't work. I'm no good at long sentences.


What type of evolution with small scale changes in genes is called?

Some would call that microevolution. I would not. Some divide evolution into micro and macro. Evolutionary biologists prefer to use the terms evolution and speciation.

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