Octopus and squid evolution is officially weirder than we could have ever imagined
Just when we thought octopuses couldn’t be any weirder, it turns out that they and their cephalopod brethren evolve differently from nearly every other organism on the planet.
In a surprising twist, scientists have discovered that octopuses,
along with some squid and cuttlefish species, routinely edit their RNA
(ribonucleic acid) sequences to adapt to their environment.
This is weird because that’s really not how adaptations usually
happen in multicellular animals. When an organism changes in some
fundamental way, it typically starts with a genetic mutation – a change
to the DNA.
The findings have been published in Cell.
Extremely interesting podcast!!! It’ll be cool to see where this research leads!
“…but then you get in 1998 this since proven fraudulent paper in The Lancet from Andrew Wakefield suggesting that there’s a link that MMR, the measles, mumps, and rubella vaccine might cause autism, but that had a really serious impact on vaccination uptake for a number of years”
How “Chameleons” change color
Many chameleons, and panther chameleons in particular, have the remarkable ability to exhibit complex and rapid colour changes during social interactions such as male contests or courtship. It is generally interpreted that these changes are due to dispersion/aggregation of pigment-containing organelles within dermal chromatophores.
But, combining microscopy, photometric videography and photonic band-gap modelling, we show that chameleons shift colour through active tuning of a lattice of guanine nanocrystals within a superficial thick layer of dermal iridophores. In addition, we show that a deeper population of iridophores with larger crystals reflects a substantial proportion of sunlight especially in the near-infrared range.
The organization of iridophores into two superposed layers constitutes an evolutionary novelty for chameleons, which allows some species to combine efficient camouflage with spectacular display, while potentially providing passive thermal protection. -src
Giffed by: rudescience From: This video
Wow that’s cool 🤓
I don’t think any other video has said this better. This is a great video explaining GMOs.