Straight up (7)
(Other definitions for genuine that I've seen before include "Real, true" , "Real, not faked" , "Native" , "'Real, unfeigned (7)'" , "Bona fide, authentic" .)
'straight up' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for erect that I've seen before include "Crete (anag)" , "Upstanding" , "Construct - perpendicular" , "Upright or vertical" , "Build, upright" .)