Marked as culture wars even though it's within academia. It's a critique of the guy that discovered SRY, in the context of the controversy around Caster Semenya.
On Sinclair, SRY and the destruction of a legacy.
In 1990, Andrew Sinclair was the first author on a paper that reported the discovery of SRY as the gene that drives male development in mammals.
He was the first author on a paper led by Peter Goodfellow, and they published side-by-side with a paper led by Robin Lovell-Badge.
This pair of papers showed that the “mysterious make male mammals molecule” was the product of the SRY gene.
Unequivocally.
Their joint discovery was hailed, including by Sinclair himself, as the answer to one of the most fundamental questions about human life: what makes us male or female?
This is, IMO, an entirely reasonable lauding of the impact.
SRY is, unequivocally, the molecule that makes male mice and men.
Any researcher who wishes to identify the sex of a (mammalian) animal or tissue (or cell line, whatever) they are working with looks for SRY.
Any researcher in the intersection between developmental biology and clinical genetics (👀) uses SRY to understand how a genetic disorder has caused fetal death.
Any geneticist detecting the sex of a pregnant woman’s baby uses SRY as their marker.
Any embryologist trying to prevent the most appalling sex-linked genetic disorders in Petri-dish embryos uses SRY.
Any forensic scientist trying to profile a murderer uses SRY.
Any archaeologist trying to sex a skeleton will try SRY as a first pass.
Thousands upon thousands of SRY assays run daily for various reasons.
But all to flag “male”.
That SRY is the “make male” gene (at least in mammals) is uncontroversial, GCSE-level (maybe lower), textbook knowledge.
It is so thoroughly assimilated into - and crucial to, for good reason - our knowledge regarding sex development, it’s hard to over-exaggerate.
I don’t think the researchers will get Nobels, although developmental biologists have an outsized impact here.
We do good stuff. Like answering some of life’s most fundamental questions. 😉
And more, in developmental biology, there are few genuine “master switches”.
These are genes that control entire developmental processes, overwriting everything else that could have or should have emerged.
SRY is a master switch. Concept.
So maybe they’ll get a Nobel. I would fully support, TBH. Their impact is impossible to estimate.
So then, to the opening premise: the destruction of a legacy.
Sinclair, back in 1990, has this “switch” nailed down. The answer to a fundamental question. The single gene that is necessary and sufficient to determine (dev bio, not lay, meaning) male development.
And in the 2020s, he chucks this away.
He doesn’t chuck it away in the dev bio literature.
He has a thriving research programme in clinical dev genetics, all good.
He’s not saying in that literature “that discovery no longer holds”. Why would he?
But he’s saying “this gene doesn’t determine sex” in the sports/philosophy literature.
And that needs examining.
Because thousands upon thousands of people have been, for nearly 40 years, been routinely, with good reason, using SRY to “find male”.
He evokes uncertainty.
Of course, technology moves. Of course, we are more alert to exceptions.
He “hedges”. “SRY doesn’t always lead to testes development”.
I mean, OK 🤷♀️ It almost always does, but genetic disorders exist. This is not news.
“It’s a complex network and we can’t predict outcomes.”
That something is not guaranteed (because genetic disorders and environment insults) does not mean we can’t predict that almost all people with SRY have testes.
My friend, have you ever heard of a master switch? I feel you have experience here.
“You can’t tell sex by SRY status.”
Ok, if you prefer, you can think of these individuals as SRY+ with testes and all the stuff downstream of that, but don’t call them male/men.
Have you written to the textbook editors to change this record?
“It’s not a good way to call sex.”
I can’t even 🤦♀️ enough.
He is a clever guy (with SRY, I’d bet my house on it).
He knows - he knows - the difference between markers, screens, SOPs for medical workflows.
I don’t care if he doesn’t want to say Caster Semenya is male.
He certainly knows Semenya’s DSD, Semenya’s biology and what having SRY triggered for Semenya’s development.
And this is where I will stop. For the time being, at least.
This thread has been therapeutic 😆
I have been struggling with the collision of a scientific legacy, rightfully owned, then cast aside so easily.
He is the person I’d most love to sit down with and get to the bottom of “what’s happening here?”
Footnote: People in the labs that were historically and currently involved with this research, who have seen the various “names” prostrate themselves, have emailed me at various points.
None of you are alone.
Plain garbage propaganda. Throwing in "excluding the top 1 percent of households (the outliers in how they spend their wealth)" to massage inconvenient numbers is plain lying with statistics.