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Thread: Where did dogs come from ? 33,000 year old skull found.

  1. #21
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    Oh for sure....I agree with that sentiment exactly.

    But maybe, he ha doubts about his own theory....I dont actually know if he retracted it on his deathbed or not thouh so was actually asking lol

  2. #22
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    Quote Originally Posted by Lala View Post
    Selective breeing is not the same as evolution though....

    Just saying.
    It involves similar mechanisms though. Evolution occurs as a natural process in response to survival, it requires a gene pool that contains the required gene that is then naturally favoured.
    Whereas in breeding dogs or whatever humans use the same process to select what they want in a dog but for a different reason. Natural selection or artifical selection it is all about selecting for a gene and increasing or decreasing its frequency in a population. Natural gene mutations can also occur in populations. Scientists can also artificially mutate genes in the lab, or try and fix or replace unwanted mutations - gene therapy.

    A species of moth after the indutrial revolution in Britain turned from cream to brown after the cream coloured tree bark they had evolved to camolflage against turned brown from the industrial smog. A small percentage of the population had a gene that reulted in a brown colour that matched the new colour of the bark and was thus selected for by the moths predators. The brown coloured moths had the lowest chance of being detected by the predator

    I was watching an interesting program on SBS awhile back about the natural selection of human skin colouring in response to UV light from the sun which has produced the different shades as you move from the equator to the poles.

    On the subject of carbon dating, I think it is about the known rate of decay of C14 so scientists can approximate the age. Like the universe, using the hubble telscope they can look back in time almost to the start of the universe because they know the speed of light and can measure time by it, although of course what happened before no one knows.

    Facinating stuff. I personally dont belive in creation but I do have a very good friend who is a christian and she believes in both. She thinks that evolution is creation just on a timescale that we dont understand.
    Last edited by Kalacreek; 01-26-2012 at 08:52 PM.

  3. #23

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    I read this on a site a while ago...

    Take a petri dish full of bacteria and introduce a toxin that kills 99.999% of it. Keep re-applying the toxin and eventually, BAM, you have bacteria immune to a particular toxin. They have evolved to cope with the poison.

    Evolution may just be a theory but it's what I believe in.

    Remember gravity is still just a theory too, but you wouldn't take a leap out of your 2 storey window

  4. #24
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    Bacteria becoming immune to a virus...I guess they evolve to be immune to it, but to me that's not necessarily evolution in the true sense of the word...It's similar to humans becoming immune to a virus etc.

    Personally, I don't have any real opinions on creation or evolution. I like the mystery.

    I did watch an interesting program th eother day though about visitors from space building big monuments etc and there was soem mention of us actually being from elsewhere. It was interesting but I wouldnt say I go for that theory either.

    I also read this interesting book (fiction) and in the book, it was found that species just suddenly appeared LOL

  5. #25
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    Quote Originally Posted by Lala View Post
    Dont bite ya tongue....thats no fun
    although when i ask a question its "stupid"??

    what ever happened to theres no stupid questions just stupid answers?
    i went to school with a highly religious person who did NOT believe in dinosaurs as there was no mention of them in the bible...

  6. #26
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    Well it was a stupid question (I dont believe in that saying, there are plenty of stupdi questions, I ask many myself)..."do I believe in dinasaurs"...I mean there is evidence of dinosaurs, skeletons and fossil imprints etc.

    You'd have to be a moron to argue they didn't exist. Even someone highly religous who knew they werent mentioned in the bible cant refute the fact they walked the earth.

  7. #27
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    it wasnt actually directed at you anyway but regardless if you dont believe in evolution how can u believe in creation AND dinosaurs?
    Im not being a smart ass just curious about this...no offence intended
    there is evidence that we evolved from monkeys too but not everyone believes this

  8. #28
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    I know it wasnt directed at me, but it was a question I assume was posed to everyone and I answered it.

    I personally, as stated in a previous post, dont have any real opinions about evolution or creation. I like the mystery

    And technically, from what I have read, there isnt any REAL evidence we evolved from monkeys (or correctly, apes). There are gaps in that evidence that can be used to argue that we didnt evolve from them.

  9. #29
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    Quote Originally Posted by Lala View Post
    Bacteria becoming immune to a virus...I guess they evolve to be immune to it, but to me that's not necessarily evolution in the true sense of the word...It's similar to humans becoming immune to a virus etc.
    I think it depends. The immune response in a human has evolved to ward off disease and also recognise certain pathogens once they have had exposure. The ability of a human to mount this response can be driven by genetics as was discovered among the descendants of survivors of the bubonic plague.

    Getting back to the petri dish, most likely an evolutionary process. I work in agriculture and over the last 20 years we now have many populations of weeds that have developed resistance to herbicides. Some of this resistance is driven by single genes which block the herbicide and others by multiple genes which metabolise the herbicide. Some weeds have also developed resistance to multiple herbicides. In ryegrass the resistance gene actually makes the plant less vigourous so it exists in low numbers in the population. Once the chemical is applied the frquency of the resistance gene in the population explodes and become the norm.
    Last edited by Kalacreek; 01-26-2012 at 10:26 PM.

  10. #30
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    Quote Originally Posted by Kalacreek View Post
    I work in agriculture and over the last 20 years we now have many populations of weeds that have developed resistance to herbicides. Some of this resistance is driven by single genes and others by multiple genes. Some weeds have also developed resistance to multiple herbicides. In ryegrass the resistance gene actually makes the plant less vigourous so it exists in low numbers in the population. Once the chemical is applied the frquency of the resistance gene in the population explodes and become the norm.
    wow thats amazing

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