Quote:
Author: Dr. R. Topper
Text: First let me say that I am not a biologist, but a chemist. So I
do not have a very detailed answer to your question. I first want to say that
scientists have a very special meaning for the word "proof." In fact, it is
so difficult to "prove" a scientific theory that I can honestly say that there
are NO pieces of scientific knowledge that have actually been "proved."
Scientists come up with a theory, and then they test it in as many ways as
they can, looking for evidence or information which will either prove the
theory to be impossible, or maybe verify some of the theory's predictions, or
change the theory a little. Most theories start out because someone has done
a lot of experiments, or a lot of studies, to look at something, and then they
make a general guess as to how that thing works. This is called a "theory" in
science. However, if we guess how things are based on what someone else tells
us, or based on what we read, that is not a "theory" to a scientist but a "guess." After all of that, I guess you would like to hear some EVIDENCE
supporting evolution. One piece of evidence is based on our DNA molecules.
Every single cell in our bodies contains DNA, a special molecule which
literally makes us what we are. Our DNA is almost EXACTLY the same as gorilla
DNA, and is even closer to DNA obtained from fossils of ancient ancestors of
human beings. There is much more evidence, but I will let the biologists take
over.
(Source: