Dolphins (& Porpoises) >> Dolphins & Porpoises

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OrcaArtist
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Re: Hind flippers [Re: Kasatka]
      #138865 - 09/24/08 10:28 PM

Could this just be that a certain gene during development just didn't get "turned off" at the right time? It could be that all cetaceans still carry the gene to have hind limbs, but it's "turned off" at a certain time.

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Amanda


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xfkirsten
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Re: Hind flippers [Re: OrcaArtist]
      #138883 - 09/29/08 05:49 PM

Quote:

Could this just be that a certain gene during development just didn't get "turned off" at the right time? It could be that all cetaceans still carry the gene to have hind limbs, but it's "turned off" at a certain time.




That wouldn't be surprising. That's how some humans end up being born with tails.


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UlisesGirl
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Re: Hind flippers [Re: xfkirsten]
      #138884 - 09/29/08 05:52 PM

Quote:

That wouldn't be surprising. That's how some humans end up being born with tails.




At least we know when they're happy... Kidding.

But yeah, that's definitely a viable explainaition. I just wonder how much had to go wrong for that gene to get turned on. Most genes are connected, so I wonder if this dolphin maybe has some health problems; for example, people born with cleft pallettes often have heart defects.

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Leah


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KasatkaAdministrator
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Re: Hind flippers [Re: OrcaArtist]
      #138889 - 09/29/08 08:03 PM

Hmm, that sounds plausible. I don't know if this happens during fetal development of all species, but for some at least, cetaceans have hind limbs in utero. Your idea would make sense in that case. I don't think anything so perfectly symmetrical has been seen before, though.

Meh, what I'd give to see an x-ray of those things. =P

I wonder if she'll have any offspring, and if this will show up in a 2nd or 3rd generation.

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~ Kim


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OrcaArtist
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Re: Hind flippers [Re: Kasatka]
      #138890 - 09/29/08 10:03 PM

Perhaps there's some way to contact TWM? I think that a university in Japan was planning on studying her. It would be great to find some way to get information on her.

And just curious, but what other cetaceans have been found with hind appendages or have there been any?

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Amanda


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OrcaArtist
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Re: Hind flippers [Re: OrcaArtist]
      #138956 - 11/02/08 08:39 PM

These were posted on another forum and apparently taken in October.
Photo 1 Photo 2 Photo 3

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Amanda


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