fun fact
fun fact
Wrong mate. Check out Swyer syndrome.
XY vs XX chromosome is meaningless, since XY females occur in nature.
We all start as female and testosterone turns half of us into men.
I won’t have you teach my kids about this degenerate matter!
You mean LGBTQIA+ people?
No, degenerate matter! Unless you bring me a glass of electron-degenerate matter, i won’t even entertain these made up states of matter!
Incorrect. Without intervention by hormone signals, literally every human fetus would develop as a “female” with all the traditional female sex organs and morphology. I believe they’d even be capable of generating eggs and carrying babies, but I’m not as confident on that.
A lot of people think that the XX or XY is determinative or definitional, but it’s always the hormones, baby.
Yeah the Y chromosome doesn’t kick in until later in fetal development. It’s the reason why AMAB folks have nipples, if you’ve ever wondered, even though those nips offer no evolutionary advantage; they just develop before the X chromosome is done doing its thing.
There’s actually a surprisingly small amount of biological information stored on the Y chromosome, IIRC the vast majority lies on the X.
You pretty much nailed it.
Also, it gets much more complicated than that; at least 2% of humans are intersex, meaning they’re a mix of male and female, everywhere from outward presentation (rare) to chromosomal (more common).
It’s not just gender that’s a spectrum: sex is, too. I said ‘at least’ because it’s possible for people to go their whole lives without realising they’re intersex. 2% is huge: if you know 100 people, statistically 2 of them are intersex. Most of us know more than that.
The ‘only two genders’ thing is biologically bullshit.
The He-Man series back in the 80s always ended with little moral quips, so this is mimicking that.
The fact is that all fetuses start off assuming female, and then the presence of certain chromosomes trigger male anatomy.
Hence all males being trans if life starts at conception, as at X week development shifts to generate the male oriented organs.
At least that’s my understanding of this meme…
presence of certain chromosomes
well, the presence of certain hormones that are usually regulated by some genes on certain chromosomes
And the reception of those hormones, which may not exist or may not be functional for some people.
Turns out making beings out of trillions of cells of 100s of types (all of which have basically the same 3 or 6 billion base pair genome, yet have to act very differently) is complicated and any process has many steps, which involve various genes, receptors, signals, etc, all of which could be interrupted.
Because you’ve missed the joke.
IF life begins at conception every one is biologically female because male organs grow much later.
During early development the gonads of the fetus remain undifferentiated; that is, all fetal genitalia are the same and are phenotypically female.
Sex differences of importance to health and human disease occur throughout the life span, although the specific expression of these differences varies at different stages of life. Some differences originate in events occurring in the intrauterine environment, where developmental processes differentially organize tissues for later activation in the male or female. In the prenatal period, sex determination and differentiation occur in a series of sequential processes governed by genetic and environmental factors. During the pubertal period, behavioral and hormonal changes manifest the secondary sexual characteristics that reinforce the sexual identity of the individual through adolescence and into adulthood. Hormonal events occurring in puberty lay a framework for biological differences that persist through life and that contribute to variable onset and progression of disease in males and females. It is important to study sex differences at all stages of the life cycle, relying on animal models of disease and including sex as a variable in basic and clinical research designs.
stomp a turty
Supposedly your gender is determined at conception.
Medical researchers have made a new discovery about how a baby's sex is determined: it's not just about the X-Y chromosomes, but involves a 'regulator' that increases or decreases the activity of genes which decide if we become male or female.