Evolution and the 98% Chimpanzee

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Information about Evolution and the 98% Chimpanzee
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Published on March 6, 2009

Author: truthseekers.ca

Source: slideshare.net

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This presentation will address the claim that humans share up to 98% of the same DNA with chimpanzees.

Evolution and the 98% Chimpanzee

The claim is often made that humans share up to 98% of the same DNA with chimpanzees – is this true?

DNA is a linear array of four bases—A,G,C, and T

Only 4 possibilities exist at any specific point in a DNA sequence

Only 4 possibilities exist at any specific point in a DNA sequence

Only 4 possibilities exist at any specific point in a DNA sequence Chance tell us that 2 random sequences from any species will match at about 1 in every 4 sites

Only 4 possibilities exist at any specific point in a DNA sequence

Chance tell us that 2 random sequences from any species will match at about 1 in every 4 sites

Only 4 possibilities exist at any specific point in a DNA sequence Chance tell us that 2 random sequences from any species will match at about 1 in every 4 sites Even 2 unrelated DNA sequences will be 25% identical, not 0% identical

Only 4 possibilities exist at any specific point in a DNA sequence

Chance tell us that 2 random sequences from any species will match at about 1 in every 4 sites

Even 2 unrelated DNA sequences will be 25% identical, not 0% identical

Finding similarities does not prove common ancestry.

Of the 5,000 best-known human genes, 75% have matches in the nematode

We also share about 50% of our DNA with bananas

That doesn’t make us half bananas, either from the waist up or the waist down. There are limits in what genetics can tell us about what it means to be human.

New research suggests that the 2 genomes might not be quite as similar after all. “ Jumbled DNA Separates Chimps and Humans” Science magazine: October 25, 2002

It is obvious that we are very different from chimpanzees

If we are almost the same as chimpanzees in our DNA sequence, this simply means that … … the DNA sequence is the wrong place to look in trying to understand what makes humans different.

We now know that the 98.5% figure is very misleading

Only 76% of the human genome aligns

Artificial gaps are introduce to make an exact alignment

The difference is now at around 72%

Further copy and alignment differences cause more differences between the two species

The total similarity of the genomes could be below 70%

Our new knowledge of the genomes contradicts the idea that humans are 98% chimpanzee…

… and undermines the implications that have been drawn from this figure

The differences between a man and a chimpanzee are more astonishing

Differences include: Skeleton, Muscles, Skin, Brain, Posture, Locomotion, Speech, Tool-using, Intellect

Differences include:

Skeleton,

Muscles,

Skin,

Brain,

Posture,

Locomotion,

Speech,

Tool-using,

Intellect

Textbooks make much of the similarity between the limb skeletons of different animals to indicate their common origin.

If these structures were transmitted by the same genes, varied from time to time by mutations, the theory would make good sense. Unfortunately this is not the case.

The concept of homology in terms of similar genes handed on from a common ancestor has broken down…

Darwin originally thought that all life was related and could be traced back to a single simple life form

He drew a tree diagram showing a proposed evolutionary pathway charting the different species.

The tree would later grow to include more and more species.

Eventually this diagram becomes too complex

 

Researchers say although for much of the past 150 years biology has largely concerned itself with filling in the details of the tree it is now obsolete and needs to be discarded.

Dr. Eric Bapteste, an evolutionary biologist at the Pierre and Marie Curie University in Paris, said: “For a long time the holy grail was to build a tree of life. We have no evidence at all that the tree of life is a reality.”

Current research is finding a far more complex scenario than Darwin could have imagined – particularly in relation to bacteria and single-celled organisms.

Dr. Bapteste said: “If you don’t have a tree of life what does it mean for evolutionary biology. At first it’s very scary – but in the past couple of years people have begun to free their minds.”

Dr. Rose said: “The tree of life is being politely buried – we all know that. What’s less accepted is our whole fundamental view of biology needs to change.”

The more one examines the evidence for evolution, the more apparent the many gaps, misrepresentations and oversimplifications become.

Lo, this only have I found, that God hath made man upright; but they have sought out many inventions. – Ecclesiastes 7:29

truthseekers.ca

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