However, even if the direction of selection does reverse in this way, traits that were lost in the past may not re-evolve in an identical form (see Dollo's law).
Sakéwanten, yéning pamargin  seleksi tnénten nungkalik antuk pamargi sekadi puniki, sifat-sifat sané ilang duk riin minabang nénten maevolusi mawali ring wentuk sané identik (cingakin ring hukum Dollo).