Crossword Genius

Doggedness is derived from its presence (11)

Ross

I believe the answer is:

persistence

'doggedness' is the definition.
(I know that doggedness can be written as persistence)

'derived from its presence' is the wordplay.
'derived from' is an anagram indicator.
'its'+'presence'='itspresence'
'itspresence' is an anagram of 'PERSISTENCE'.

'is' acts as a link.

(Other definitions for persistence that I've seen before include "Dogged quality" , "Resolution" , "Refusal to accept refusal" , "Tenacity" , "Obstinacy, perseverance" .)

I've seen this clue in The Globe and Mail and The Telegraph.
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