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Vestigial structures are the expressed genetic remnants indicatory of a species evolutionary past. In humans one such vestigial remnant is the coccyx, which were once part of tail structures in our primate ancestors.

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Why do vestigial structures such as the human appendix exist?

Vestigial structures like the human appendix exist because they were once functional in our evolutionary ancestors but have lost their original purpose over time.


Can natural selection exist with out evolution?

Perhaps not, but evolution can exist without natural selection.


Does natural selection exist?

Of course!


Why is natural selection important for the animals?

Because all animals that exist have formed, and are being formed and re-formed, continuously, primarily by natural selection.


How did humans come to exist according to Darwin?

They evolved by a process of natural selection.


Are new alleles made by natural selection?

No - natural selection does not create new alleles. Variation in alleles needs to exist in the population in order for natural selection to occur. Natural selection will involve the change in allele frequencies over time, but it does not create new alleles. New alleles are the result of mutations.


How does natural selection relate to randomness?

In all natural processes, there is an element of chance. In natural selection, most of that chance is introduced by the randomness of the genetic variations it works with. But other elements of chance exist as well. Natural selection is a stochastic phenomenon: not every less able variant will produce less offspring than the more able variant; much depends on chance environmental circumstances.


How is the word 'astronomy' defined?

Astronomy is the science which studies natural non-biological physical structures that exist outside the Earth's atmosphere.


What did Darwin mean when he said that natural selection works on existing variation?

Natural selection is the differential reproductive success of genomic variation. But for differing variants to be able to compete reproductively, such variants must exist in the first place. Reproduction causes such variants to come into existence.


The similarities in the Galapagos finches implied?

The Galapagos finches only exist on the islands and inspired Charles Darwin. They implied that evolution occurs through natural selection.


Does science say that god do exist?

No, science believes the Big Bang created the universe. Science believes that humans evolved from apes through the theory of natural selection.


Do mutation evolution and natural selection apply to individuals or populations?

Since the natural selection is a theory, we can not apply a theory as a science. Even though some scientists believed in natural selection: think of Nazi scientists, Soviet scientists, etc. They were 100% evolutionist believers. Nobody yet seen atoms but we believe that they exist...strange. We apply faith in some modern science...hmmm...