1. Cultivars are not necessarily true to type

2. To propagate true-to-type clones, many Cultivars must be propagated vegetatively through cuttings, grafting, and even tissue culture

3. However, if you were to plant acorn, delicata, and crookneck squash (all of which belong to the same C.pepo species), those plants could Cross pollinate between themselves and the seeds you collect could potentially be hybrids and not true to type.

4. In the world of selective animal Breeding, to "breed true" means that specimens of an animal breed will breed true-to-type when mated like-to-like; that is, that the progeny of any two individuals in the same breed will show consistent, replicable and predictable characteristics