Why is checking for a Y chromosome not sufficient? This does not seem to me like an arbitrary definition. What am I missing?
It's in fact possible to develop a female body with XY chromosomes:
https://pmc.ncbi.nlm.nih.gov/articles/PMC6586948/
Also warning that article has images that may be inappropriate in a public setting. I didn't realize when I linked it.
alt Hacker News
It's in fact possible to develop a female body with XY chromosomes:
https://pmc.ncbi.nlm.nih.gov/articles/PMC6586948/
Also warning that article has images that may be inappropriate in a public setting. I didn't realize when I linked it.