(Of a taxon or organ) reversion to ancestral state; reappearance of the presumed ancestral condition.
The recurrence in a descendant of genetic characteristics of a remote ancestor reversion.
Throwback, development of a characteristic or disease known to have occurred in an earlier ancestor rather than in the parents.
The phenomenon in which an individual has a character or disease known to have occurred in a remote ancestor but not in his parents.
The principle of inheritance of disease or bodily characters from grandparents or remoter ancestors, the parents not having been affected by these.
The appearance of a characteristic presumed to have been present in some remote ancestor, due to chance recombination of genes or environmental conditions favorable to their expression in the embryo.
The manifestation of traits from distant ancestors in an individual; a return to an earlier form.