• lemming@sh.itjust.works
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    4 days ago

    What? How does this happen? This is a serious question about biology. Other than chimera, I can’t think of a plausible mechanism.

    • Quibblekrust@thelemmy.club
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      1 hour ago

      It’s called piebaldism. It’s caused in cats when melanistic cells (color causing cells) fail to migrate to all parts of the body during development. Such cats can have a wide variety of patterns from tuxedo cats to cow cats. This cat just has an unusual pattern.

      A more common look:

      https://en.wikipedia.org/wiki/Bicolor_cat

      Chimerism causes left/right differences, not top to bottom.

    • Catoblepas@lemmy.blahaj.zone
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      4 days ago

      It could also be mosaicism, where a mutation early in development led to some cell lines having black fur and others to having white. I dunno enough about cat genetics to say how close those genes are/how easily one can mutate into the other vs the likelihood of it being a chimera.

      • lemming@sh.itjust.works
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        4 days ago

        This would work of the cells producing the pigment stayed put during development. However, they migrate from neural crest on the back. That’s why you get white spots on parts of a body far from back - belly, forehead, paws etc. This pattern is a problem with migratory capabilities of the melanocytes, they simply don’t reach these parts of the body co male pigments there.