The male sort includes females as well (7)
I believe the answer is:
'females as well' is the definition.
I can't judge whether this definition defines the answer.
'the male sort' is the wordplay.
'the male' becomes 'man' (man is a kind of male).
'sort' becomes 'kind' (synonyms).
'includes' acts as a link.
Can you help me to learn more?
(Other definitions for mankind that I've seen before include "'One giant leap for - - '" , "Humanity" , "people, in general" , "Human beings collectively" , "Human race" .)