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Thread: Percentage of genetic similarity between humans and animals

  1. #1
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    1 out of 1 members found this post helpful.

    Post Percentage of genetic similarity between humans and animals



    It is very difficult to find reliable data comparing the human genome to animal genome. The principal reason is that few animals have had their full genome sequenced. Even those that have cannot be easily compared in terms of percentages because the genomic length and chromosomal division can vary greatly from one species to another.

    Scouring the Web, here is what I have found so far.

    - Genome-wide variation from one human being to another can be up to 0.5% (99.5% similarity)

    - Chimpanzees are 96% to 98% similar to humans, depending on how it is calculated. (source)

    - Cats have 90% of homologous genes with humans, 82% with dogs, 80% with cows, 79% with chimpanzees, 69% with rats and 67% with mice. (source)

    - Cows (Bos taurus) are 80% genetically similar to humans (source)

    - 75% of mouse genes have equivalents in humans (source), 90% of the mouse genome could be lined up with a region on the human genome (source) 99% of mouse genes turn out to have analogues in humans (source)

    - The fruit fly (Drosophila) shares about 60% of its DNA with humans (source).

    - About 60% of chicken genes correspond to a similar human gene. (source)


    The number of genes across a few tested species can be compared on HomoloGene.
    Last edited by Maciamo; 10-07-09 at 17:34.
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    Hi, great post unfortunately the "source linke" for Chimpanzees seems deleted or is it a mistake from your part?

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    these comparisons are very uncertain helas! every specie has its proper number of genes -
    What I notice is that (according to these not too much reliable %s), human specie lies at the "center" of other species..., if by example I rely on the %s of human, cat, dog, mouse; funny play!

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    1 out of 1 members found this post helpful.
    Every time I mercilessly swat a fruit fly, I am killing something which is over half human.
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    Percentages are relative. Relative in comparison to group x. For example all modern Humans are like 95% almost identical, relativly to their other close cousins within the Homo group.

    if we use only modern Humans for comparison with an interval of West Eurasians on one end and East Eurasians on the other, than French and Chinese are like 95% different while French and Iraqis are like ~96% almost identical.

    However if we use an interval of only Europe to West Asia than French and Iraqis would be 65-70% very similar but "only" ~50% almost identical, while French and Germans would be around 92% almost identical.
    Last edited by Alan; 23-01-17 at 02:32.

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    It depends if we compare function of genes (general view) or identical alleles (detailed comparison).
    Be wary of people who tend to glorify the past, underestimate presence, and demonize the future.

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    Interesting.

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