Or, androgen insensitivity syndrome, specifically complete androgen insensitivity syndrome:

Androgen insensitivity syndrome (AIS) is a difference in sex development involving hormonal resistance due to androgen receptor dysfunction.

Complete androgen insensitivity syndrome (CAIS) is an AIS condition that results in the complete inability of the cell to respond to androgens.

The unresponsiveness of the cell to the presence of androgenic hormones prevents the masculinization of male genitalia in the developing fetus, as well as the development of male secondary sexual characteristics at puberty, but does allow female genital and sexual development in those with the condition.

Individuals affected by CAIS develop a normal external female habitus, despite the presence of a Y chromosome, but internally, they will lack a uterus, and the vaginal cavity will be shallow, while the gonads, having been turned into testicles rather than ovaries in the earlier separate process also triggered by their Y chromosome, will remain undescended in the place where the ovaries would have been.

Most individuals with CAIS are raised as females.They are born phenotypically female and are usually heterosexual with a female gender identity; however, at least two case studies have reported male gender identity in individuals with CAIS.

I think we can safely say that is nitpicking, but it’s informative and correct so I’m all for it!

From my biology lessons 20 years ago, I thought I was taught that it was the presence of a second X chromosome that made a person genetically female, but I could definitely be misremembering. Either way, XXY individuals are usually born male, and Dr Genetics Federation was likely talking about sawyer syndrome (or so google tells me). Thanks for the correction!

And 5 time finalist of the Eureka Prize - which sounds impressive even if I’ve never heard of it!

Just a few letters shy of the acronym PIGFUCKER

Transphobic BS I believe. But I’m not trawling through fb to find the original.

I just wrote a comment above but I believe OP is mixing XXY with what the comment was about, which is likely Swyer Syndrome: XY individuals with female anatomy and gonadal dysgenesis. While they have a Y chromosome, a defective sex-determining gene leads to a failure to sexually differentiate into male gonadal tissue and leads to subsequent loss of downstream sex hormone production.

You had me up to:

And to everyone’s information: I am for Germany and we do not have two words for sex and gender. I don’t understand what you English speakers are up to.

I don’t understand what you mean here? I’m sure biological sex and gender identity are considered separate ideas even in languages without a specific word for them. To my mind a lot of transphobia comes from people not understanding there’s a difference between sex and gender.

As for the XXY, I’m OP and that’s my mistake. I misremembered my biology lessons and thought a second X chromosome made someone biological female, rather than the presence of an Y chromosome making someone male. I replied to someone else explaining my mistake.

As an English speaker, trust me you don’t wanna know. Don’t dive into it