Some dangerous experiments involving gender (3)
I believe the answer is:
sex
'gender' is the definition.
('sex' can be a synonym of 'gender')
'some dangerous experiments' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'SEX' can be found hidden inside 'dangerous experiments'.
'involving' is the link.
(Other definitions for sex that I've seen before include "Hanky-panky" , "VI (Lat.); m. or f." , "Male or female" , "Gender" , "This symbol is epitome of glamour" .)