But does exist. The rarity of a biological phenomenon does not mean we should ignore its existence.Extremely rare.
Also there are some intersex conditions that are statistically more likely to occur in our species than redheads, fun fact.
Like I think XY Androgen Sensitivity Syndrome (born with XY chromosomes but also born completely female on the outside, if you catch my drift) is a fairly common biological phenomenon all things considered and may even be underreported in some areas.
Since the person is raised as a girl and it’s only at the onset of puberty that they find out they have a Y chromosome. Usually they are given hormones to complete the puberty process. Or they may elect not to, it’s their body after all
Though infertility or other fertility issues are common with intersex conditions, like always there are exceptions to the rule
Swyer Syndrome Born with XY chromosomes but are also born externally and indeed internally female. Such folk are also typically born with external gonads that are surgically removed at birth so the testosterone doesn’t interfere with puberty later on. (Which again is helped along with the intervention of our good friend, medical science.)
Since folks have the right internal equipment so to speak, with the help of egg donation they are actually able to become pregnant. Though C Section is the preferred delivery method in such scenarios, since there are more risks involved with their pregnancies overall. But eh, life is a risk I suppose.
This is why sex is not considered a binary system by anyone in the field of biology or genetics. I mean a binary by definition is two outcomes full stop. Like the binary code doesn’t just have a random 3 in there. If you follow?
So in genetics/biology it is understood thusly
“Sex characteristics are distributed through bimodal means in humans.”
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