r/interestingasfuck • u/Significant_Snow_718 • 29d ago

/r/all Chick with genetic defect

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u/michael-65536 29d ago

Wouldn't those, and the front legs, be wings though? Conjoined twins are usually symmetrical across the point of embryonic axis fission.

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u/Cat_Peach_Pits 29d ago

You can kind of see the wings on the front chick. Also the 2nd pair are on backward, like a butt-to-butt fusion. Im not saying anything definitive here because the pictures arent great, and I havent worked with HOX for like....17 years. So take this with a grain of salt.

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u/michael-65536 29d ago

Hmm, having trouble seeing it.

Possibly it's neither. Or both. Or I don't know what chicks look like.

My assumption was that both the legs and wings were activated in both segments, otherwise where's the extra head?

But then maybe it's more like a parasitic twin than a symmetrically conjoined one, and the other twin's head didn't develop.

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u/Cat_Peach_Pits 29d ago

But then maybe it's more like a parasitic twin than a symmetrically conjoined one, and the other twin's head didn't develop.

This is what I was saying, maybe I should have said parasitic to be clearer.