Sexual dimorphism rule

Interstellar_1@lemmy.blahaj.zone to 196@lemmy.blahaj.zone – 615 points –
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Id say they're making it sexual by saying it's sexual but its not sexual

Did you sleep during biology class? Sexual dimorphism refers to the different morphological characteristics, like outward appearances, between the sexes within a species. Like how male birds are often more colorful than female birds.

Ohh ok. Well thanks for explaining but you didn't have to be mean at the start

Perhaps a misunderstanding due to societies recent attempt at broadening the concepts of sex and gender with the inclusion of social issues, which has the effect of mudding the waters of understanding and yields interpretations that vary widely as it strays away from science as its base.

I’ll stick with what can be tested, reproduced and proven when it comes to concrete subjects like sexuality. Utilizing truth does not magically solve the current social issues we face, but it does present a base that could achieve a much greater height for society as a whole.

OP: says something revealing they don't understand biology

Response: dude, what? You don't understand biology!

You: "maybe they don't understand biology because of all these new-fangled GeNdErS and iDeNtItIeS!!!"

(please don't get me started on this, I am literally about to get my PhD in the ways people intentionally misconstrue and oversimplify sex, sexuality, and sexual selection in nature to obfuscate the validity of LGBTQ+ people in society and I don't want to be here all day)

I am literally about to get my PhD in the ways people intentionally misconstrue and oversimplify sex, sexuality, and sexual selection in nature to obfuscate the validity of LGBTQ+ people in society

What's your major?? I couldn't tell which field that would be

I will have a PhD in molecular, cellular, and developmental biology. I have publications in epigenetics/chromatin/gene regulation and similar fields. I also research equity in the sciences, and one specific research focus is inequity for LGBTQ+ individuals in STEM. Therefore, I have expertise in these social issues as well as the biological ones. I will have a certificate added to my PhD in biology that validates this expertise in LGBTQ+ justice and social research methods.

Don’t jump to the wrong conclusion to quickly friends. Truth doesn’t equate to lack of empathy. I have so much respect and sympathy for transgender people and want society to get past treating them as special. But truth is the only thing that can accomplish that.

Perfect, than you are who I want to understand.

Let us start off simple, can you describe the foundation of your source material. How are the authors you are reading creating an authority? Are they doing experiments, studies, surveys? Are the results able to be reproduced, are they theoritical, objective or just opinion? Why should I even consider the validity of your evidence?

I am guessing you are smart and will run away from an honest discussion.

Oh, second comment: your framing is disengenuine.

These are scientists, I'm a scientist, we're held to standards of peer review and methodological scrutiny.

I don't need to establish how and whether we're doing science with authority-- that's the beauty of the invention of the scientific method. I also don't need to establish whether these are facts or opinions, because the body of research is so large and well-discussed, for decades now, that peer review has had plenty of time to do it's work.

To humor you-- the methods used have been all of the above: surveys, experiments, studies, etc.

To humble you-- it's extremely arrogant of you to ask a scientist, to their face, whether their research is real or just opinion. If you think all the research in this field is wrong, you can fix it the way we fix all our science: by conducting your own research and subjecting it to review by other experts in the field.

You compromised your integrity by jumping to a false conclusion to deal a quick shot at me. That earns me the right to question the validity of your stance. Don’t dish it out if you can’t take it back. Too much college can lead to feelings of superiority, but the true tell is how easy you are offended.

“…how easy your are offended.”

Says the person literally frothing at the mouth to say trans women aren’t women under a post about monkey noses.

Dude this image reinforces my point that male is different than females. Up your education level before taking on a topic you can’t fully appreciate.

This image of animated characters and monkeys proves that trans people aren’t real? 💀💀

Oh my god, I can’t handle how stupid you are.

How stupid I am? You can’t even read!

Stoneparchment gave you so much info and you comprehended none of it. Why would anyone engage with you seriously if you won’t return the favor?

It's a little unclear if you are asking for resources about the diversity of sex, sexual orientation, and sexual selection strategies in nature, OR about the ways in which they are misconstrued by society-- either by ignoring the diversity of nature to favor a heternormative and gender essentialist narrative, or by too closely feeling that what is natural is what should be considered good and just (the naturalistic fallacy).

I, myself, am authoring studies on the latter topic, but the field is so small that by sharing specific examples, I seriously risk doxxing myself (and others with whom I work closely on a politically fraught topic).

One also needs to understand the former before meaningfully engaging with the latter anyway, so I highly recommend the book Evolution's Rainbow by Stanford ecologist Joan Roughgarden. The book is written in plain language (intended for a wider audience than just biology researchers) and details the (at the time-- 2009, with an updated edition from 2016) present summary of known ecological examples of organisms behaving in ways that counter the human social norms surrounding sexual orientation and gender identity. She goes on to discuss the molecular basis of sex and gender in humans, including what is know about difference in brain structures and gene regulation, and then she contextualizes these examples in sociological terms. I think the book is a little dated at this point, and there was some conflict amongst biologists about aspects of the book that aren't related to what we're discussing (related to her modification of Darwin's theory of sexual selection), so it isn't perfect, but it's basically the first thing any junior scholar is asked to read regarding this discussion topic. I think it will provide you with what you are looking for, seeing as it cites hundreds of studies in tens of fields of biological sciences relating to sex, gender, and sexual orientation in humans and other organisms.

Some key facts (mostly covered in the book) that you or others might find interesting:

  • Homosexual behavior (same sex mating behavior) has been documented in fish, insects, birds, amphibians, reptiles, Invertibrates, and over 100 species of mammals
  • Intersex bodies are common in nature, with many organisms either having characteristics of both sexes at one time or changing sex over the course of their lifetime. This is commonly found in "higher order" animals as well, and some populations of large mammals (like deer or bears) have been documented to have MOSTLY intersex individuals.
  • Heterosexual mating is not required for reproduction, with documented examples of two sperm, two eggs, or just a single sperm or egg being enough to produce viable offspring in some circumstances. When homosexual mating is observed, it often increases the reproductive fitness of the participants
  • The "sex roles" (unfortunate terminology, imo) of organisms are not a fixed norm, and we have many examples where the expectations you might have based on human societies for division of labor and activities are inverted or ignored entirely (such as birds where the males stay home and incubate eggs while the females compete with each other using displays of dominance and promiscuity)
  • Although it doesn't make sense to describe animals as having gender identities (due to those terms being intended for self-description among human social groups), it is worth pointing out that we do have many examples among animals where individuals of the same sex may have distinct categorical social dynamics, morphologies, and social roles (and that human gender identity does appear to have some underlying biological basis, although I will emphasize that it is non-deterministic and non-essentialist). There's a discussion happening in the field about whether it is worth the potential downsides to describe these animals as having multiple genders within a single sex, so as to normalize and explain to non-biologists that human gender identities are mirrored by other organisms and are valid according to biological science

Great, appreciate the clarification and book recommendation which I added to my reading list. Can’t help but notice the sources and tidbits are part of what I agree is knowledge that can be gained by studying animals. My original point reinforces we share the same view here. I want science to be the guiding factor in social affairs.

To concentrate on the well established insight gained from animal studies completely steps over the sensitive topic you know I intended, which is the degradation of the science behind sexual fluidity. The only group (and loudest) that is relevant here is transgender.

So if you please I would love to hear the science behind an ability for an organism to change an inherited trait. Is a transgender woman a man or woman?

This is the last comment I will make to you.

Those who carefully read my previous replies will notice that I absolutely did not step over this question. The book I recommended details more than just animal and ecological examples, it also addresses physiological differences people of different sexes, sexual orientations, and gender identities.

Here's the truth: the binary categories of male and female are not simple biological ones. Organisms cannot be neatly categorized as male or female, including humans. To put humans into these boxes is to ignore huge grey areas in our understanding of the biology underlying these traits. Even among XX or XY individuals, sex characteristics are polygenic and vary continuously, meaning that even looking at a person's karyotype (which, you should understand, we hardly ever do) you could not reliably predict the appearance of external genitalia, the presence or absence of other sex characteristics like body hair or breasts, or the identity or orientation of a person.

Although I do not personally believe that having an underlying biological justification is necessary for a trans woman to be a valid woman, there definitely are physiological and biological realities that validate her experiences. Moreover, I don't think we determine womanhood by biology at all-- for example, a XY human with complete androgen insensitivity would likely not even know HERSELF that she had a Y-chromosome, perhaps for her whole life, and you-- a random person on the street-- would be absolutely unable to tell.

If the question is, then, is there natural precedent for an organism's sex chromosomes to be unpredictive of their sex characteristics or social roles? The answer is YES, unequivocally. If the question is, is there natural precedent for organisms to be able to intentionally change their sex? The answer is YES, absolutely. If the question is, is there natural precedent for organisms to have a social role that does not match the standard for individuals of their sex? The answer is also YES, 100%, certainly.

Thus, if the question is, are trans people representative of the norms of nature and the biological sciences? The answer is: You fucken BET.

Anyone who claims that trans women are somehow categorically distinct from other women is ignoring how loose the boundaries of womanhood already are. They are trying to twist the facts present under close examination of the biological world to fit their own human social narrative of gender essentialism. The facts of biology are absolutely on the side of trans individuals, this is the consensus among researchers-- and it is being ignored for political purposes in the same way the consensus among researchers on climate change is being ignored.

Like I said, I don't have all day to engage on this, especially since almost everyone talking about trans people in relation to biological essentialism is not engaging in the discussion in good faith. The take home message is this: if you are earnestly wanting to understand what biological science says about trans people, go read that book, and listen to myself and other experts that trans women have every right and every fact on their side to support their identities.

Just wanna say, I really appreciate your in depth responses! ❤️

As I feared we quickly left the realm of scientific method in favor of misguided correlations backed by opinions and feelings. This is exactly my problem, the pollution of the idea of sex to reach a manufactured state of inclusion at the expense of the scientific method.

Yes, body dysmorphia is a product of nature, it is an unfortunate natural occurence which may or may not serve a greater evolutionary purpose, yes as a society we must try to accommodate all mental illness, but society agrees a violent schizophrenic is dangerous, an autistic or disabled person should have a system of support. Transgender is the first of its kind that I know to demand the dissolution of truth to meet their desired want of acceptance.

But why are you throwing out all the sources your first post established that supports the concept of the distinct differences of inherited sex? There is in fact a species or two of animals that can change gender, humans are not one of them. You have elegantly tiptoed around the necessity of scientific backing to prove your claims by introducing irrelevant facts and making false correlations. Just another academic who has mastered the art of avoiding the truth of the matter.

All in all we share a very similar stance on the biology of the sexes. You are the one that can’t seperate your heart from your mind. Appreciate the discussion, I am built different as I love the satisifcation of being proven wrong. But you can’t provide me that luxury.

I just want to be clear (not to this person but to anyone reading) that they are wrong.

They are assuming what they will read as evidence in books and literature. It's frankly kind of astonishing that I can say "I'm an expert, I'm a biologist, and trans women are women with tons of biological evidence for that validity" and then have this person say "AH but the SCIENCE says I'm right, you just have FEELINGS!"

To be clear, the science says I'm right, the feelings are irrelevant. Toodles!

If the science is right prove it objectively without using your immature feelings on the subject.

Wtf are you talking about? They didn't get emotional, they cited sources, they explained clearly that you're wrong. But you can't see past your desire to invalidate trans people to even bring yourself to attempt to refute any of the points they laid out, calling the actual research scientist immature and emotional. Once again, every accusation is a confession.

Not everyone appreciates the acquisition of knowledge which is the tougher path than blissful ignorance, all I want is proof backed with science. What mechanism is at work for you to know with certainity I am wrong when I say I can turn metal into gold?

I support transpeople, I am against sacrificing truth and the protections put in place to protect gender. Just like I am against turning an entire parking lot into handicap spaces.

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Can I ask why you want science to validate someone's lived experience? Isn't the happiness of an individual when you call them their preferred name or gender more important than some sanctity that can be derived through the scientific method?

It just so happens that science has found repeatedly that trans people live better lives when their identities are affirmed, but why should you need that when you could just be nice to people without it causing you any issues whatsoever?

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documented examples of two sperm, two eggs, or just a single sperm or egg being enough to produce viable offspring in some circumstances. When homosexual mating is observed, it often increases the reproductive fitness of the participants

Do you have a link for this? Never heard about this before

Absolutely!

Two eggs:

Booth et al. (2014). "New insights on facultative parthenogensis in pythons". Biological Journal of Linnean Society, 112(3)461-468

Two sperm:

Tinti, F. and Scali, V. (1992). "Genome exclusion and gametic DAPI-DNA content in the hybridogenetic Bacillus rossius-- grandii benazzii complex (Insecta Phasmatodea)". Molecular reproduction and development, 33(3)235-242

One egg:

Ryder et al. (2021). "Facultative parthenogensis in California Condors". Journal of Heredity, 112(7)569-574

One sperm (surprised me too!):

Heesch et al. (2021). Evolution of life cycles and reproductive traits: insights from the brown algae." Journal of Evolutionary Biology, 34(7)992-1009

These examples are non-exhaustive (so many parthenogensis examples!) so if you want to know more, or if you're interested in learning about the increased reproductive fitness post-homosexual mating activities, no one primary publication will give you a complete picture. I recommended reading the book I mentioned-- Evolution's Rainbow by Joan Roughgarden-- because it details this in ways I can't summarize in a social media comment.

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Perhaps a misunderstanding due to societies recent attempt at broadening the concepts of sex and gender

No, not at all.

There's no "mudding the waters", he's just ignorant of what "sexual dimorphism" meant, and not clever enough to check it before leaving a most ironic comment about "making it sexual".

You mean "muddying the waters", by the way. Another example of your ignorance.

I’ll stick with what can be tested, reproduced and proven

Don't lie. You're very much writing like a "only two genders and I don't see how 'sex' and 'gender' are different despite there being a very clear scientific consensus on it" - guy.

If you are born with brown eyes is it possible to change them to blue?

You could have at least Google searched it before attempting a gotcha, there are three methods. One doesn't actually change the color, but the other two do.

But I am speaking at the funamental level, a brown eye tortured into become blue is still a malformed brown eye. An operation doesn’t change your DNA nor the origin of what you are.

a brown eye tortured into become blue

Your English rather poor, comrade. Better practice front of mirror more times.

If you're born Vladimir, but you move to the West where no-one knows it, and you introduce yourself as Robert and everyone calls you Robert, are you not then Robert?

Gender is not in your DNA silly. That's the whole "gender is different from sex" that's the scientific consensus. You said you rely on science, yet now you argue your brainfarts are more valid than consensus of the entire scientific community?

Then you would know DNA is decided at conception as an immutable state, it doesn’t change, every cell in your body holds a complete copy of your ancestors spliced DNA sequences. That is the science, gender is a part of this makeup. A human can only pretend to change their inherited characteristics.

That is the science, gender is a part of this makeup

I refer you to the image I posted earlier.

Here, have it again.

#Sex refers to “the different biological and physiological characteristics of males and females, such as reproductive organs, chromosomes, hormones, etc.” Gender refers to "the socially constructed characteristics of women and men – such as norms, roles and relationships of and between groups of women and men.

I'm afraid you just might be cognitively incapable of understanding that sex is different from gender.

Like trying to teach a dog to whistle, this.

Great so you agree a transwoman is a man by sex, and a woman by societies new definition of gender. We are totally starting to get each other.

"New definition"?

Oh my sweet summer child, just because you're hearing about it only now doesn't mean this difference in sex and gender is new.

No, no, no.

It's older than the written word,

https://en.m.wikipedia.org/wiki/Third_gender#History

In Mesopotamian mythology, among the earliest written records of humanity, there are references to types of people who are not men and not women.

Also, you don't seem to understand the scientific side of the biological effects of HRT.

No, transitioning doesn't change your DNA. No-one has argued it does. This doesn't even remotely mean trans women are men or trans men women, and to make the argument that XY-people are all men or XX-people all women is to literally deny science, like a Flat Earther.

concrete subjects like like sexuality

Lmaooo what are you on?

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"Sexual" in this context just means relating to different sexes, it's not saying they're doing it to be sexually appealing (I hope at least)

It is sexual, because the big noses are supposed to be attractive to the female monkeys. It shows the male is healthy and thus worth it to reproduce with.

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