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Thread: identical twins, one transgender

  1. #1

    identical twins, one transgender

    i don't get it. with identical dna, how can this happen?

    http://abcnews.go.com/Health/identic...ry?id=15142268

  2. #2
    Senior Member flying's Avatar
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    Maybe DNA isn't everything. There must be some kind of other difference.
    T12L1 Incomplete Still here This is the place to be 58 years old

  3. #3
    DNA isn't everything, true. There are so many possibilities that could happen (genetic mutations, mutations to gene alleles, chromosome mutations etc). In this case, maybe they simply have lower testosterone. It's hard to say without any medical testing but surely it's not entirely because this person "chose" to be that way (being much shorter and having more feminine features for example).

  4. #4
    Their DNA and genes aren't identical--changes in genes and their expression happen, sometimes due to environmental influences, and are referred to collectively as 'epigenetic changes'.
    Here's a good video http://www.youtube.com/watch?v=AV8FM_d1Leo

    and the wiki article about epigenetics is good.

    Nobody knows exactly what causes a person to identify with one gender or another. Sex chromosomes and testosterone levels don't explain gender identity. What is known for certain is that people that identify as one gender, but are coerced by doctors, family, etc to act like the other gender are incredibly unhappy.

    Fascinating, isn't it?

  5. #5
    Senior Member Van Quad's Avatar
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    Thanks for posting this interesting video. CC, never a dull place

    Quote Originally Posted by avictoria View Post
    Their DNA and genes aren't identical--changes in genes and their expression happen, sometimes due to environmental influences, and are referred to collectively as 'epigenetic changes'.
    Here's a good video http://www.youtube.com/watch?v=AV8FM_d1Leo

    and the wiki article about epigenetics is good.

    Nobody knows exactly what causes a person to identify with one gender or another. Sex chromosomes and testosterone levels don't explain gender identity. What is known for certain is that people that identify as one gender, but are coerced by doctors, family, etc to act like the other gender are incredibly unhappy.

    Fascinating, isn't it?

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