[zahlman]

> Leave aside the fact that very few of us here have actually tested our 23rd chromosome.

When people do submit to such testing, how commonly are the results other than they expected?

[crote]

More often than you'd think! You can easily go your entire life without knowing. It is not uncommon for the first hint to be that a couple is having trouble conceiving.

[zahlman]

> More often than you'd think!

Perhaps not, given the selection effect.

> You can easily go your entire life without knowing.

Sure, since we already established that the tests are usually not done at all.

An overwhelming majority of people (at least among those who have a basic understanding of the underlying science) could, however, guess correctly about themselves.

The combined prevalence of all intersex conditions is simply not that high.