Assertion: advantageous mutation | /r/HasProperty | rare
Facets:
Source sentences:
text: Both theories agree that the vast majority of novel mutations are neutral or deleterious and that advantageous mutations are rare, which has been supported by experimental results.
text: In general, it is accepted that the majority of mutations are neutral or deleterious, with advantageous mutations being rare; however, the proportion of types of mutations varies between species.