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-   -   What are some lines of scientific evidence that life evolved from a common ancestor? (https://www.askmehelpdesk.com/showthread.php?t=219500)

  • May 24, 2008, 09:47 PM
    tahoessblue
    What are some lines of scientific evidence that life evolved from a common ancestor?
    Need Help
  • May 25, 2008, 07:49 AM
    1lastkissb4ugo
    Well two theriose. 1-the big bang.. no any evedence 2-Christ.. evedence- 1The bible 2The cross 3Bible relitaves

    If I was helpful please rate my answer, good luck!
  • May 25, 2008, 08:42 AM
    Capuchin
    There is an overwhelming amount of scientific evidence for evolution, spread across multiple disciplines.

    I suggest you look at the following page, it outlines some of the ways in which we can infer common descent.

    29+ Evidences for Macroevolution: the Scientific Case for Common Descent
  • May 25, 2008, 08:45 AM
    1lastkissb4ugo
    Comment on Capuchin's post
    It does reflect the current study of the beginning.
  • May 25, 2008, 08:47 AM
    Capuchin
    Quote:

    Originally Posted by 1lastkissb4ugo
    It does reflect the current study of the begining.

    "The beginning" has nothing to do with evolution. The Big Bang is accepted by mainstream science because it has pretty strong evidence. I think you are posting in the wrong thread.
  • May 26, 2008, 10:48 AM
    asking
    Tahoesblue, Lines of evidence for descent from a common ancestor include:

    1. Comparative morphology.
    For example, many animals share the same anatomy, which would not be expected if they were not related to one another. Just as cousins in the same family might have the same straight blond hair or curly, red hair, etc, related animals might both have the same hip construction, even though there are other ways the hip could have been constructed and would still work. Different kinds of pine trees have similar needles and long lists of other shared traits--because they are related to one another.

    2. Comparative molecular biology:
    The same is true at the molecular level, where the more related two organisms, the more alike their biochemistry is. They use the same proteins to do the same things.

    3. Comparative genetics:
    Related organisms, as measured by morphology or molecules can be shown to share genes. And just as closely related organisms have similar anatomy, molecules and genes, unrelated organisms are usually very different from one another.

    4. Development. As plants and animals develop from fertilized eggs into embryos and then into adults, they pass through predictable stages of development. Same story: Those that are most closely related develop similarly.

    All of these lines of evidence that show HOW we are related also show that we ARE related. Humans are animals with backbones, so we share at least some common anatomies and genes and molecules with all other vertebrates--fish, frogs, dinosaurs, and mammals. For example, we all have a backbone and a brain encased in a skull and all vertebrates have their main nerve cord (the spinal cord) in the back. For comparison, insects have their main nerve cord in their belly.

    And yet humans and other vertebrates also share some genes with insects and even yeasts--which are a kind of fungus. We are not very related to yeasts, but we do share genes with them because both yeasts and humans are descended from a common ancestor. There is no evidence against this idea--that we are all related--but thousands upon thousands of scientific discoveries that support it. That is why scientists now accept that living things are all related.

    I could tell you more, but I just wanted to hit the highlights.
    Asking
  • Jun 14, 2008, 11:40 AM
    WVHiflyer
    Quote:

    Originally Posted by tahoessblue
    Need Help

    Try this link: Understanding Evolution

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