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  1. #1
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    Teach me evolution

    As a creationist based solely on the Bible's teaching I reject evolution. Following discussion on this board I did some reading and I have some queries, some things I wish clarified. I will write some things here as I understand them, but I am certain I will get something wrong so please correct me.

    Evolution states that we all came about from a single ancestor that was the first life. This simple creature was able to replicate itself. Over time this creature, through mutations, changed and became more complicated. Eventually things evolved so that instead of having a creature that could replicate it self we now have animals, and some plants as well I think, that rely on a merging of genetic material from two of the species, male and female. Why did this change occur? Why is need to members of species better than have self replication?

    Scott

  2. #2
    Reader in Slood Dynamics Rincewind's Avatar
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    Quote Originally Posted by Freddy
    Evolution states that we all came about from a single ancestor that was the first life. This simple creature was able to replicate itself. Over time this creature, through mutations, changed and became more complicated. Eventually things evolved so that instead of having a creature that could replicate it self we now have animals, and some plants as well I think, that rely on a merging of genetic material from two of the species, male and female. Why did this change occur? Why is need to members of species better than have self replication?
    Scott,

    Is your question, "how did sexual reproduction evolve and why does it seem to be favoured over asexual reproduction in complicated organisms?"?
    So einfach wie möglich, aber nicht einfacher - Albert Einstein

  3. #3
    CC International Master JGB's Avatar
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    Freddy are you open and ready to learn about evolution or is this another attempt at a religion versus non religion thread?

  4. #4
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    This thread is about giving me a forum to ask the evolutionists of this forum questions about evolution. It is not about me trying to prove creation using science, as I believe that is pointless for me to try. I believe the whole creation science movement is doomed to failure. I intend to ask questions and try to understand, but given my beliefs and the almost impossibility of the completely removing them from the way I ask questions, I will probably ask things in a more critical way than a totally undecided person.
    Scott

  5. #5
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    Quote Originally Posted by Barry Cox
    Scott,

    Is your question, "how did sexual reproduction evolve and why does it seem to be favoured over asexual reproduction in complicated organisms?"?
    Well that question is something like I was try to ask. We can start there if you like.

    Scott

  6. #6
    Account Shoutbox Banned antichrist's Avatar
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    i am sure you have already done a search and found hundreds of evolution site. For a strigent atheist view of evolution look up 'american atheists' or just look in the mirror.

  7. #7
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    Quote Originally Posted by Freddy
    Well that question is something like I was try to ask. We can start there if you like.

    Scott

    Asexual reproduction is for Muslims, Jews & Catholics ; sexual reproduction is for everyone else!
    Power comes from the barrel of a gun.

  8. #8
    Reader in Slood Dynamics Rincewind's Avatar
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    Quote Originally Posted by Freddy
    Well that question is something like I was try to ask. We can start there if you like.
    Scott,

    I suggest wide reading of science based book and good websites (not all are good) would be a more economical and reliable way for you to advance your education. My knowledge in the subject is amatuerish at best, but I'll do my best to do a little reading and give a bare bones response.

    Basically the reason sexual reproduction is favoured is because it can lead to faster evolution rate with a lower extinction rate. There is a hypothesis that sexual reproduction is better at removing unfavourable mutations from the gene pool and provides protection from disease and parasite arms-races (this last point is called the Red Queen hypothesis).

    As to how sexual reproduction evolved. It seems likely that a super-species would have evolved both male and female sexual organs. Then the benefits of cross organism reproduction (above) over self fertilisation would result in some species evolved into specific sexes and the opposite sexual organs would have become unnecessary in each of the sexes, and would have eventually disappeared.
    So einfach wie möglich, aber nicht einfacher - Albert Einstein

  9. #9
    Reader in Slood Dynamics Rincewind's Avatar
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    Dave and Pete, please keep to the topic. If you want to discuss no the existence of good or whatever your posts are about, do it elsewhere. So Dave, in answer to the question in your sig. line, just go.
    So einfach wie möglich, aber nicht einfacher - Albert Einstein

  10. #10
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    Quote Originally Posted by Barry Cox
    Dave and Pete, please keep to the topic. If you want to discuss no the existence of good or whatever your posts are about, do it elsewhere. So Dave, in answer to the question in your sig. line, just go.
    Boring! Come on Barry, don't get so tetchy or we'll have to call you Boring Barry!

    If you must know, the thing that distinguishes sexual from asexual reproduction is that in the former genetic material is transferred to the recipient. So bacteria can divide asexually, in which case they are identical to the parents apart from any denovo mutations that occur in the process, but they can also recieve genetic material from other bacteria in the form of a phage which is then incorporated into the host genome.

    So sexual reproduction evolved from this primitive ability to transfer genetic material, some organisms became more specialised at the transfer, but in primitive organisms the transfer can often go both ways, eg a nematode possesses male and female organs.
    Power comes from the barrel of a gun.

  11. #11
    Reader in Slood Dynamics Rincewind's Avatar
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    Quote Originally Posted by David_Richards
    So sexual reproduction evolved from this primitive ability to transfer genetic material, some organisms became more specialised at the transfer, but in primitive organisms the transfer can often go both ways, eg a nematode possesses male and female organs.
    I thought you had a degree in genetics.
    So einfach wie möglich, aber nicht einfacher - Albert Einstein

  12. #12
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    Quote Originally Posted by Barry Cox
    I thought you had a degree in genetics.

    Human Genetics
    Power comes from the barrel of a gun.

  13. #13
    CC Grandmaster Alan Shore's Avatar
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    Quote Originally Posted by David_Richards
    Boring! Come on Barry, don't get so tetchy or we'll have to call you Boring Barry!
    Lister: You've changed you know Kryten. You're getting tetchy.
    Kryten: Now sir, you know what happens when you call me tetchy.
    Lister: Well that's what I'm calling you, tetchy, tetchy!
    Kryten: It's just as well I can't hear you.
    Lister draws on the whiteboard TETCHY and waves it in Kryten's face.
    Kryten: That's it! Now you've done it!

    *fight ensues*

    (From Season 5 - Quarantine)
    "I can't go back to yesterday because I was a different person then."
    - White Queen, Alice through the Looking-Glass

  14. #14
    Reader in Slood Dynamics Rincewind's Avatar
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    Quote Originally Posted by David_Richards
    Human Genetics
    OK I was just expecting a slightly more indepth description for the reasons why sexual reproduction is such an evolutionary winner. The main reasons I could find as an interested amatuer was the efficient removal of deliterious mutations and the Red Queen hypothesis regarding host-virus arms-race. There is a cost to having sexual reproduction and the Red Queen components argue that many asexual reproducer are either "boom-and-bust" type lifeforms (like bacteria) or little troubled by disease due to environment (e.g., very cold environments).
    So einfach wie möglich, aber nicht einfacher - Albert Einstein

  15. #15
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    Quote Originally Posted by Bruce Dickinson
    Lister: You've changed you know Kryten. You're getting tetchy.
    Kryten: Now sir, you know what happens when you call me tetchy.
    Lister: Well that's what I'm calling you, tetchy, tetchy!
    Kryten: It's just as well I can't hear you.
    Lister draws on the whiteboard TETCHY and waves it in Kryten's face.
    Kryten: That's it! Now you've done it!

    *fight ensues*

    (From Season 5 - Quarantine)
    How cum I wasn in that scene? I'll have to have words with the script writers!

    BTW the hologram seems to have turned himself off!
    Last edited by David_Richards; 06-03-2005 at 10:57 PM.
    Power comes from the barrel of a gun.

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