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Thread: How could organisms change to sexual reproduction if...

  1. #1 How could organisms change to sexual reproduction if... 
    Forum Ph.D. Raziell's Avatar
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    ... mutations are random.

    I read mutations are random. But for sexual reproduction to evolve, there needs to be 2 organisms that mutated into 2 (female + male) versions that could reproduce enough to keep the traits.

    I mean... what is the chance of 2 random mutations that causes 2 organisms (male+female) that were completely dependant on eachother AND match perfectly genetically.

    One mutation in an organism is ok to understand. But for sexual reproduction to evolve? It would need to happen in a "cooporative" way.

    English not my native language, hoping you understand what I mean to ask.


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    Why is it that you assume that a male and female must share the same mutation?
    Not at all, only one parent need carry the mutation to be able to pass it on.


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    I think what he is asking is "how can all organisms of some species have only one sex (or no sex) and then, all of a sudden via mutation, there are two sexes?" If that's correct, it's a good question. I'm also curious to hear the answer(s).

    (Don't get me wrong. I support Darwin's Theory of Evolution.)
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    Genius Duck Dywyddyr's Avatar
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    Hermaphroditism became "specialised".
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    ▼▼ dn ʎɐʍ sıɥʇ ▼▼ RedPanda's Avatar
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    Don't quote me - I heard it somewhere (but it sounds reasonable)...

    I read about a possible way sexual reproduction could have started (although it would not technically be 'sexual'...yet).
    If an early life-form evolved a way to absorb genetic information when consuming other early life-forms, it would be a good 'first step' to sexual reproduction.
    (I think the suggestion was that it would also be easier to absorb genetic information from its own species...but that might just be my unreliable memory adding crap.)

    Just a thought.
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    Quote Originally Posted by PumaMan View Post
    I think what he is asking is "how can all organisms of some species have only one sex (or no sex) and then, all of a sudden via mutation, there are two sexes?" If that's correct, it's a good question. I'm also curious to hear the answer(s).

    (Don't get me wrong. I support Darwin's Theory of Evolution.)
    I thought we had a chat about you proving me stupid. You know it makes me sad.

    Ok- gotcha. This one goes way back...
    "First Sex" Found in Australian Fossils?
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    Funny that. I instantly thought of corals.
    "Courage is what it takes to stand up and speak; courage is also what it takes to sit down and listen." Winston Churchill
    "nature is like a game of Jenga; you never know which brick you pull out will cause the whole stack to collapse" Lucy Cooke
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    Forum Cosmic Wizard icewendigo's Avatar
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    Hi Raziell,

    like many features we see from our perspective that is the culmination of millions of years of small accumulated changes, we sometimes see the end result and give it a simple label, as if that black/white oversimplified label came into being like a jack-in-the-box poping out, without considering the grey area. Its similar to what we call life, imagining that the simple label "Life" just came into being out of nothing, ignoring the gargantuan grey spectrum of molecular activity between inert and what we call life.

    Imo, an organism that is worth reading a bit about are the sponges, they are close to the boundary between unicellular colony and multi-cellular organism and as such can provide interesting insights.
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    perhaps fungi would be a start Fungus - Wikipedia, the free encyclopedia
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