There is an example of a derived trait.
A derived trait is a trait that is present in an organisms but not in the last common ancestor of the group being considered.This may refer to structures that were present in the past, but are not present today.They have undergone secondary loss.A derived trait is the lack of a structure.The term "derived" is preferred to "advanced" for the sake of precision.It's often secondarily derived.In the case of the histolytica, the absence of mitochondria is a result of their secondary loss.The primitive character state for birds was lost by penguins and dodos.Depending on the group in question, a trait may or may not be derived.The last common ancestor of the tetrapods had a five-digit hand.The last common ancestor to the vertebrates did not have fingers.
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