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Scientists couldn't find the head of the starfish. Turns out, the entire thing is head, it's the body that is missing.

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[-] guyrocket@kbin.social 15 points 11 months ago

Just like yo momma every time I visit.

[-] mrbaby@lemmy.world 2 points 11 months ago

The way she everts her stomach and digests you with her enzymes. You just can't get that with other gals.

[-] Metal_Zealot@lemmy.ml 15 points 11 months ago

I bet it gives great-

Nevermind

[-] PeriodicallyPedantic@lemmy.ca 13 points 11 months ago

Compliments?

[-] DoctorWhookah@sh.itjust.works 9 points 11 months ago
[-] PixeIOrange@feddit.de 8 points 11 months ago
[-] sour@kbin.social 3 points 11 months ago

collection item

[-] Swedneck@discuss.tchncs.de 7 points 11 months ago

this feels kinda silly, like surely we're the ones defining what the head is here? head and body doesn't make sense for a starfish, it's like asking where the head of a potato is

[-] brianorca@lemmy.world 8 points 11 months ago

No, it's not English semantics they are using here. It's DNA semantics. They looked for DNA markers and gene expression to define what is head or tail of various animals, and found that most of the starfish expressed those similarly to the head of other animals.

[-] FuglyDuck@lemmy.world 1 points 11 months ago

So somebody went and looked at its genetic structure, and compared its structure as it developed from larva and found that each of the limbs (if I understand it correctly) are all head (or heads,) and the tail disappears.

they talk about it here for normies like me. the starfish thing starts at 2:15

[-] PhlubbaDubba@lemm.ee 1 points 11 months ago

I mean...where did they think its mouth was if not part of the head?

[-] brianorca@lemmy.world 1 points 11 months ago

One of the previous theories had the head in the middle and tail at the edge of the arms. But this study showed that the DNA markers for "head" are expressed all through the starfish, and there are no "tail" markers at all.

[-] PhlubbaDubba@lemm.ee 1 points 11 months ago

So what I'm getting here is that they basically proved that Starfish evolved from a clade that predates the development of basically everything we consider an animal save for spongeoforms

[-] AgentOrangesicle@lemmy.world 1 points 11 months ago

Everything has always been brain.

That's literally the principle of several religions.

this post was submitted on 07 Nov 2023
235 points (94.3% liked)

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