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In reply to the discussion: Does the Big Bang breakthrough offer proof of God? [View all]RainDog
(28,784 posts)Last edited Sat Mar 22, 2014, 11:18 AM - Edit history (1)
Viruses which you deal with each and every day of your life evolve. There is a special branch of evolutionary science that just deals with virii. The study of virii involves the study of the basic building blocks of all life.
They follow the same principles of evolution as fruit flies, with very short life spans, that show random mutation and evolution by this mutation in particular environments.
This is the basic idea of evolution - that life evolves because dna replicates. As DNA replicates, there are sometimes changes as the DNA copies itself. If such a change helps an organism to survive, that change is kept. If it harms the chances of survival, that DNA does not get passed on to many future generations.
But sometimes there is a good and bad with such DNA replication - one such incident is the gene that passes on resistance to malaria when only one copy is inherited. When two are inherited - this results in sickle cell anemia. But the benefit of having resistance to malaria was so great, as in, so many were able to survive with this gene, that the possible loss of someone from sickle cell anemia was overcome by that gain.
That's an example of evolution in the human genome that has been positively demonstrated within the world.
So, what I'm getting at is this: you talk about descent from older primate forms, but the reality of such descent is evident within the human and earlier primate genomes. It is possible to extract DNA from fossils and look at mutations over time - both with human precursors and between humans and now living primates, such as chimpanzees.
The DNA record shows what happened in past times and can show that now.
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