This article does not cover it but Elisabeth Ann is not 100% black-footed ferret as the mitochondrial DNA comes from a domestic ferret (via the egg cell the black-footed ferret cell nucleus was cloned into). This means that this individual will breed with a normal black-footed ferret male and only the male progeny of those (that still has those normal ferret mitochondria) will be crossed back into the real black-footed ferret population.