purebred

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purebred

denoting a pure strain obtained through many generations of controlled breeding for desirable traits
References in periodicals archive ?
But there will be troubles, because such animals don't breed true.
The blooms produce large, interesting seed pods and the seeds breed true although it does take six-seven years to grow plants of flowering size.
It is the first blue to breed true from seed and will be available in next year's catalogue at pounds 1.