Anglerfish. Extreme dimorphism. How to recognise the female: she makes large gametes.pic.twitter.com/RMBI73E42L
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Anglerfish. Extreme dimorphism. How to recognise the female: she makes large gametes.pic.twitter.com/RMBI73E42L
Seahorses. Female fucks around while male carries babies. How to recognise the female: she makes large gametes.pic.twitter.com/LiWoUL8yUU
Birds. Non-XY genetic determination. How to recognise the female: she makes large gametes.pic.twitter.com/ArEjcrshCF
Crocodiles. Sex determined by environmental temperature during development. How to recognise the female: she makes large gametes.pic.twitter.com/Utz1vuVcN1
Platypus. Five pairs of sex chromosomes. X1X1X2X2X3X3X4X4X5X5 (female) and X1Y1X2Y2.... (male), where X3 and X5 look more like a bird (non X) than a mammal. How to recognise the female: she makes large gametes.pic.twitter.com/BS8xp5xHpl
Hyena. Females have pseudo-penis which she internalises during mating. How to recognise the female: she makes large gametes.pic.twitter.com/XPBPnXXoCk
Lily. Hermaphrodites. How to recognise the female part: it makes large gametes.pic.twitter.com/aOvmtJhioI
Flatworms. Hermaphrodites. They penis fence to determine which takes the male role. Most of the time, no-one wins and they each, perhaps dejectedly, spaff (
) over the other. How to recognise the female part: it makes large gametes.pic.twitter.com/fStYnxavks
Bees. Males are missing an entire genome copy. How to recognise the female: she makes large gametes.pic.twitter.com/btA1sZueRJ
Asparagus. No sense of sexed self and no plausible mechanism for social construction of gender. How to recognise the female: she makes large gametes.pic.twitter.com/QzwZdRMh7B
Tuatara. Sex determination so extremely temperature sensitive that climate change is causing them to be all male. How to recognise the male: he makes small gametes. He can also be seen looking annoyed at enforced incel status.pic.twitter.com/t7VJrMgnjO
Peafowl. Sexual selection gone mental. How to recognise the female: she makes large gametes. And she’s not a massive freaking showoff, like this fella...pic.twitter.com/QEKPFjKLsU
Mushrooms. Delicious. How to recognise the female: there are no females (‘there is only Zuul’). ‘Female’ and ‘male’ are predicated on two and only two differential gametes, and fungi don’t have them thingies, settling instead for equivalent gametes labelled +/-, or A/B, or yawn.pic.twitter.com/YI9IvlYU45
Straw-not technically a berry-berries. Delicious hermaphrodites. Genetic sex determination is polygenic and may reasonably be described as a (limited) spectrum. How to recognise the female part: it makes large gametes.pic.twitter.com/ynwex34ktK
Head lice. Annoying buggers. The female transmits chromosomes she inherited from either her mum or dad; the male *only* transmits chromosomes he inherited from his mum. How to recognise the female: she makes large gametes.pic.twitter.com/wm1Wr14rwe
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.