"Humans are deuterostomes, which means that when they develop in the womb the anus forms before any other opening. This means at one point you were nothing but an asshole." - @sciencefunn at Insta

#quote #science #human #deuterostome #asshole

#Deuterostome diversification: chromosome-level genome assemblies of two #hemichordates reveals the genomic architecture of the deuterostome common ancestor and subsequent lineage-specific rearrangement events #PLOSBiology https://plos.io/3VtikDF
Chromosome-level genome assemblies of 2 hemichordates provide new insights into deuterostome origin and chromosome evolution

The diversity of deuterostome body plans has made it challenging to reconstruct their ancestral condition and to understand their diversification. This study uses chromosome-level genome assemblies of two hemichordates to help infer the genomic architecture of the deuterostome common ancestor and subsequent lineage-specific rearrangement events.

Starfish Are Basically Bodiless Heads Crawling Around The Ocean, Scientists Say
According to a new analysis of their gene expression, starfish and other echinoderms lack the architecture for an actual body.
They are essentially just mobile heads that sprouted the ability to crawl, say a team led by biologists Laurent Formery and Chris Lowe of Stanford University.
https://www.sciencealert.com/starfish-are-basically-bodiless-heads-crawling-around-the-ocean-scientists-say #starfish #echinoderms #heads #bodyplan #deuterostome #superphylum
Starfish Are Basically Bodiless Heads Crawling Around The Ocean, Scientists Say

We already knew that starfish were pretty weird.

ScienceAlert