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Albino and discoloration question

Discussion in 'Advanced Tortoise Topics' started by Benjtort, Feb 22, 2018.

  1. Benjtort

    Benjtort Active Member

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    im about to get real technical here so be warned!! How rare are albinos and is the gene that creates them rescesive or dominant trait. And if you we’re to breed 2 normal colored sulcatas could you get a albino?? Also are normal sulcata tortoises rescesive (rr) or dominant (RR) or both (Rr)
  2. WithLisa

    WithLisa Well-Known Member

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    The mutation is usually recessive (so an albino has to be homozygotic (rr)) and fortunately rare. Maybe 1:100000? No idea. But since they are specifically bred, albino tortoises are not that rare anymore.

    Yes. If both sulcatas were hybrids (Rr) they would look normal but a quarter of their offspring would be albinos. But there is also a (very small) chance of spontaneous mutation.
  3. Benjtort

    Benjtort Active Member

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    So is a tortoise RR capable of breeding to create a albino
  4. WithLisa

    WithLisa Well-Known Member

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    If both parents are RR it's exceptionally unlikely.
    You have slightly better chances if one parent is Rr, but it would be easier to just crossbreed the Rr with the children (if you want to breed albinos at all costs - which makes no sense to me, tortoises are healthy and beautiful as they are).
  5. Benjtort

    Benjtort Active Member

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    Ok I’m not looking to breed them I was just curious
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