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Cake day: December 9th, 2023

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  • oyfrog@lemmy.worldtoScience Memes@mander.xyzDiphalia
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    2 months ago

    Thanks for joining penis and intermittent organ facts.

    Did you know that the “tail” of the male coastal tailed frog is actually an extension of the cloaca effectively acting as an intermittent organ?

    Reply ‘more cock’ for more facts about penises and intermittent organs.


  • oyfrog@lemmy.worldtoScience Memes@mander.xyzDiphalia
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    2 months ago

    Hemipenes (and penis/intermittent organs) are really diverse in terms of size and shape. A lot of lizards and snakes have little nodules and barbs that vary from species to species. Not sure what the ornaments do, but it’s interesting. Also interesting is that having two (i.e. one on each side) potentially means that there’s a handedness in terms of the preferred side used for mating.

    Other fun facts about penises and other intermittent organs: cats and other felids have barbed penises that force ovulation in the female. Tangentially related are the pseudo penises of female hyenas.

    More fun facts: damselfly males have intermittent organs that are spoon shaped so they scrape out the sperm of rival males.

    Respond ‘cock facts’ to learn more about penises and intermittent organs.

    Respond ‘stop’ if you don’t want to learn cool shit.


  • I’m a biologist/bioinformatician—a lot of my presentations require some schematic representation of the analysis or pipeline.

    I tend to build simple pipelines with PowerPoint and add animations (makes it easier for me to talk through step by step). If it’s complex, I build parts in some other thing (R, illustrator/Photoshop), and animate the PDF/PNG in.

    Equations I try to avoid because most of my audience tends to gloss over them. On the occasion that I’m talking to more computational folks, I’ll build the equation elsewhere, export it as an image, and animate it in with annotations.

    Again, I’m a biologist and present mostly to biologists, so some of this may seem stupid or nonsensical to folks in other fields.




  • Not always—it depends on the publisher for sure, and possibly the field (e.g., physics, chemistry).

    In biology, you have several models for peer review. Completely blind reviews where both reviewers and authors are anonymized. You also have semi blind models where the reviewers know the identities of the authors, but the authors don’t know reviewers’ identities. You also have open reviews where everyone knows one another’s identities.

    In completely blind and semi-blind models, you occasionally have reviewers that reveal their identity.








  • oyfrog@lemmy.worldtoScience Memes@mander.xyznooo my genderinos
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    9 months ago

    Adding to this: XX and XY works for mammals, but not for other vertebrates (fish, birds, reptiles, amphibians). Birds and reptiles have Z and W chromosomes, and unlike in mammals where females are homozygotes, males in these groups are homozygotes. Some reptiles have temperature dependent sex determination, where ambient temperature above some value will produce males or females (depends on species). Some reptiles are composed entirely of females.

    Some fish will straight up change sexes depending on age and male-female ratio in a social group.

    In other groups it’s not even different chromosomes but simply copy number of specific genes.

    Plants can do all sorts of whacky things like produce seeds and pollen in the same individual.

    Fungi are an entirely different cluster fuck because they have mating types which are not simple binaries.

    Eukaryotic sex determination isn’t a binary and it isn’t even a nicely categorizable spectrum. It’s a grab-bag of whatever doesn’t perma-fuck your genome.

    Source: me, I’m a biologist. Though admittedly I work on animals so my understanding of fungi and plant stuff is fuzzy at best.