Answer: unmapped

AnswerCrossword Clue
UNMAPPEDNot in the atlas
UNMAPPEDNot yet charted, as a route
UNMAPPEDLike the human genome, before the 1990s
UNMAPPEDLike terra incognita
unmappedUnexplored
unmapped(of a gene or chromosome) Not yet mapped
unmappednot mapped
unmapped(of an area or feature) Not represented on a geographical map