Mastodawn

#Scientists May Have Found the Blueprint of the Human Body at the Bottom of the Ocean
We know that some animals are #bilaterian—meaning they display #bilateralsymmetry—while others are not, but nature is rarely so black-and-white.
A study found that the sea anemone, a member of the #Cnidarian phylum, uses bilaterian-like techniques to form its body.
https://www.popularmechanics.com/science/animals/a70021751/sea-anemone-bilaterian-ocean/

Scientists May Have Found the Blueprint of the Human Body at the Bottom of the Ocean

Scientists discovered that the brainless sea anemone build their bodies with a technique common in bilaterians... which is what humans are.

Popular Mechanics

katch wreck Sep 26, 2023

"#Monoamines like #serotonin, #dopamine, and #adrenaline/noradrenaline (#epinephrine/norepinephrine) act as #neuromodulators in the nervous system.. However, the evolutionary origin of the genes required for monoaminergic modulation is uncertain. Using a phylogenomic approach, in this study, we show that most of the genes involved in monoamine production, modulation, and reception originated in the #bilaterian stem group."

https://www.nature.com/articles/s41467-023-39030-2

The monoaminergic system is a bilaterian innovation - Nature Communications

Monoamines act as neuromodulators in the nervous system, but their evolutionary origins are unclear. Here, the authors examine the evolution of genes involved in monoamine production, and processing suggesting that the monoaminergic system evolved in the bilaterian stem-group.

Nature