Examine reverse of Turner? Yes, surprisingly (7)
I believe the answer is:
analyse
'examine' is the definition.
(synonyms)
'reverse of turner? yes surprisingly' is the wordplay.
'reverse of' says the letters should be written backwards.
'turner?' becomes 'Lana' (Lana Turner, 1921-1995).
'surprisingly' indicates anagramming the letters (a surprising ordering of the letters).
'lana' backwards is 'anal'.
'yes' with letters rearranged gives 'yse'.
'anal'+'yse'='ANALYSE'
(Other definitions for analyse that I've seen before include "Break down to find the constituents" , "Any ales (anag.)" , "Dissect" , "Separate (something) into its component parts" , "Break down to study the parts" .)