[Serious] Are you non-binary?

[ignoramus]

Guys, is the jury still out on the United Nations as to whether eating quiche is considered manly or not?
Asking for a friend.

[Duty]

Quiche Loraine and crusty buttered bread is manly. If you use margarine instead of butter however, a trip to the transsexualism clinic is needed.

[brewer]

I'm curious to know if any identical twins (either sex) have both become gay, or just one of them?
Would being an identical twin guarantee identical hormonal levels also?

Twins (identical and fraternal) have been studied quite a bit, for a lot of conditions including sexual preference. While identical twins show a greater incidence of the same sexual preference than fraternal twins (even when raised in separate families), the jury is still out on genetic and environmental impact.

They have looked at identical twin hormone levels also. Being identical is not a guarantee for identical levels.

To tired to look for sources now. You'll need to vigorously frown at me.

[Duty]

IIRC there is around a 50% concordance for monozygotic (identical) twins and homosexuality...checks wiki...yes! My memory has not been completely obliterated through substance misuse!

https://en.wikipedia.org/wiki/Biology_an...in_studies

[John 6IX Breezy]

Broadly speaking, genes build the gun but don't pull the trigger. Therefore, identical twins can often exhibit vastly different preferences and behaviors, despite having identical genetic compositions.

That said, when statistics are calculated for most behavioral traits, you find that identical twins are more likely to share these traits than fraternal twins, which are more likely to share these traits then regular siblings, etc

[Duty]

Broadly speaking, genes build the gun but don't pull the trigger. 

Very neat analogy - kudos.

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In a meta-analysis of twin studies, nearly 40% of identical twins were concordant for gender dysphoria in comparison with none of the non-identical twins.1 "That is very striking evidence. The non-identical twins who, just like the kids who are identical twins, grew up with the same parents in the same households. 

https://www.endocrineweb.com/professiona...evelopment

Gender dysphoria is more "on topic" than sexual orientation methinks, and for that metric the concordance amongst monozygotic twins is just 40%, despite their also growing up in largely the same environment/family.

[GrandizerII]

Broadly speaking, genes build the gun but don't pull the trigger. 

Very neat analogy - kudos.

---

In a meta-analysis of twin studies, nearly 40% of identical twins were concordant for gender dysphoria in comparison with none of the non-identical twins.1 "That is very striking evidence. The non-identical twins who, just like the kids who are identical twins, grew up with the same parents in the same households. 

https://www.endocrineweb.com/professiona...evelopment

Gender dysphoria is more "on topic" than sexual orientation methinks, and for that metric the concordance amongst monozygotic twins is just 40%, despite their also growing up in largely the same environment/family.

Just? That's still relatively high

[Little lunch]

I'm curious to know if any identical twins (either sex) have both become gay, or just one of them?
Would being an identical twin guarantee identical hormonal levels also?

I thought I research it for you.
I've only been to pornhub and redtube so far but I should have an answer by the end of the weekend.

[Porcupine]

False. There are people who are in-between even when we're talking of sex.

I said as much in the paragraph you quoted.

In which case, I was pointing out a contradiction.

[Duty]

Very neat analogy - kudos.

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https://www.endocrineweb.com/professiona...evelopment

Gender dysphoria is more "on topic" than sexual orientation methinks, and for that metric the concordance amongst monozygotic twins is just 40%, despite their also growing up in largely the same environment/family.

Just? That's still relatively high

Hardly. Considering the MZ twins share the vast majority of central environmental influences too (eg parenting, country, neighbourhood, schooling, DVDs etc etc etc) and the concordance rate is still just 40%, it would be fairly reasonable to deduce that genetics has an extremely negligible, if not entirely non-existent role in bringing about gender dysphoria.