 The type specimen of sediba had these non-neotenic traits despite being a juvenile, suggesting that the adults may have been less neotenic in these regards than any Homo erectus or other Homo.Heterochrony is defined as “a genetic shift in timing of the development of a tissue or anatomical part, or in the onset of a physiological process, relative to an ancestor”.Heterochrony can lead to a modification in shape, size and/or behavior of an organism through a variety of different ways.