What we found

Our results showed that among identical twins, if one was trans, the likelihood that the other was also trans was 21.2%.

For non-identical twins, this rate was significantly lower, at 8.7% – though this was still well above the 1–2% prevalence of trans identities in the general population.

Non-twin siblings weren’t included in our research, but we’d expect their rate would be similar to that seen among non-identical twins.

If being trans were purely a social phenomenon, we would not see this step-wise difference where the chance of being trans goes up with increasing genetic similarity.

Our data thus provide strong evidence that genes are involved.

  • UnfortunateShort
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    6 days ago

    Biology: Sex is a spectrum
    People pretending to care a lot about Biology: NU-UHH

      • klankin@piefed.ca
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        6 days ago

        (technically a multidimensional continuous field not a matrix)

        I love how they tried naming the specific dimension axes, like ‘chromosome’ is quite the limited discrete spectrum lmao

          • a_non_monotonic_function
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            6 days ago

            Essentially a 2D square of values. They are a generalization that allows you to work a bunch if math at once

            E.g.,
            1 2 3
            4 5 6
            7 8 9

            There are special operations that allow for operations with other matrices, values, etc.

            Matrix math is essentially what you’re graphics card does. A matrix holds various transformations of shapes (scaling, rotating, shearing, etc.).

              • a_non_monotonic_function
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                6 days ago

                There’s also vectors. Scalars. Tensors.

                But the truth is, this is a basic mathematical concept. Not so basic that most people would have access to it, but pretty basic otherwise.

                If the user doesn’t have knowledge of a basic concept, getting lost in the weeds is not going to be terribly useful to them. I’m a professor. I answer questions based on the way they’re posed to me.

                So, yes, I’m aware. But in this case, I was trying to actually be helpful.

                • alapakala@quokk.au
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                  6 days ago

                  Me too:

                  multidimensional continuous field

                  three big words

                  Matrix

                  one word, implied multiple variables, maybe even dimensions.

                  I’m a professor. I answer questions based on the way they’re posed to me.

                  🫱🏿‍🫲🏻