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[-] Sibshops@lemm.ee 20 points 13 hours ago* (last edited 13 hours ago)

They are not saying that the X chromosome mutates to Y, but rather saying that XY doesn't define the sex. For example, some people with XY are born with female genitalia and look female their whole lives. Sometimes they don't find out they are XY until trying to have kids and are unable to. It isn't like the X changes to Y over time. That isn't possible.

[-] ILikeBoobies@lemmy.ca 3 points 13 hours ago
[-] Uruanna@lemmy.world 11 points 12 hours ago

It's weird how your first thought is "the PhD is wrong" and not "I must have misunderstood something" .

[-] ILikeBoobies@lemmy.ca 1 points 12 hours ago* (last edited 12 hours ago)

“I must have misunderstood something” .

There was a reason I made that comment

Though I disagree with the conservative genitalia = gender ideology

[-] Beetschnapps@lemmy.world 3 points 11 hours ago

Point being… the phd is wrong!

[-] ILikeBoobies@lemmy.ca 1 points 11 hours ago* (last edited 11 hours ago)

Or the thought the phd must have meant something else

But sure the phd is wrong if he meant that; just like those anti-vax doctors and anti-abortion doctors

[-] Beetschnapps@lemmy.world 1 points 11 hours ago
[-] Sibshops@lemm.ee 11 points 12 hours ago

I think you may have misread. The PHD isn't saying that XY becomes XX, they are saying, genetically, a person carrying XY can be a cis woman. Biologically, XY doesn't determine the sex.

[-] ILikeBoobies@lemmy.ca 5 points 12 hours ago

Thank you for clarifying

[-] Tamei@lemm.ee 2 points 11 hours ago* (last edited 11 hours ago)

I honestly don't understand. What does define the sex biologically? The genitalia, then? I always understood positions like William's like "XY is the biologically male sex by definition, if the human develops female genitalia and feels like a woman they were biologically speaking still intended to be a man." I don't understand what else there could be on an elemental level to biologically determine the sex.

[-] JustAnotherRando@lemmy.world 3 points 10 hours ago

To preface: this is from a previous bout of hyper focus curiosity (i.e. I am not an expert). But the human genome is significantly more complex than "XX chromosome means biological female". Other genomic markers can trigger that don't align with the typical, which can result in male reproductive organs on a person with XX chromosome and vice versa. XX and XY are also not the only options. There are three, four, and even five somal groupings (e.g. XXY, XYY, XXX - note that to my understanding, you can't have all Y chromosomes even in these outliers). If anyone has further information or any corrections for me, I'd welcome them - I'm going off of memory from a couple of years ago and it's not directly relevant to me (i.e. I am cis-male with no known chromosomal abnormalities)

[-] Sausa@beehaw.org 2 points 10 hours ago

There's no one thing that defines sex, that's what makes it so complicated. What is often thought of as "biological sex" are two clustered sets of checkboxes (e.g chromosomes, genitalia, secondary sex characteristics, primary sex hormone), but people often have a mixture from both lists. Here's an interesting nature article on it https://www.nature.com/articles/518288a

[-] Tamei@lemm.ee 1 points 3 hours ago

Very interesting, thanks!

this post was submitted on 14 Mar 2025
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