Browse this issue
Human/chimp DNA similarity
Evidence for evolutionary relationship?
The idea that human beings and chimps have close to 100% similarity in their DNA seems to be common
knowledge. The figures quoted vary: 97%, 98%, or even 99%, depending on just who is telling the story.
What is the basis for these claims and do the data mean there really is not much difference between
chimps and people? Are we just highly evolved apes? The following concepts will assist with a proper
understanding of this issue:
Similarity (‘homology’) is not evidence for common ancestry (evolution) as against a common designer (creation). Think about a
Porsche and Volkswagen ‘Beetle’ car. They both have air–cooled, flat, horizontally–opposed, 4–cylinder engines in the rear,
independent suspension, two doors, boot (trunk) in the front, and many other similarities (‘homologies’). Why do these two very
different cars have so many similarities? Because they had the same designer! Whether similarity is morphological (appearance), or
biochemical, is of no consequence to the lack of logic in this argument for evolution.
If humans were entirely different from all other living things, or indeed if every living thing was entirely different, would this reveal the
Creator to us? No! We would logically think that there must be many creators rather than one. The unity of the creation is testimony
to the One True God who made it all (
If humans were entirely different from all other living things, how would we then live? If we are to eat food to provide nutrients and
energy to live, what would we eat if every other organism on earth were fundamentally different biochemically? How could we digest
them and how could we use the amino acids, sugars, etc., if they were different from the ones we have in our bodies? Biochemical
similarity is necessary for us to have food!
We know that DNA in cells contains much of the information necessary for the development of an organism. In other words, if two
organisms look similar, we would expect there to be some similarity also in their DNA. The DNA of a cow and a whale, two mammals,
should be more alike than the DNA of a cow and a bacterium. If it were not so, then the whole idea of DNA being the information
carrier in living things would have to be questioned. Likewise, humans and apes have a lot of morphological similarities, so we would
expect there would be similarities in their DNA. Of all the animals, chimps are most like humans,
so we would expect that their DNA