Notice the female and male finally forming bond (6)
I believe the answer is:
adhere
'bond' is the definition.
('adhere' can be a synonym of 'bond')
'notice the female and male finally' is the wordplay.
'notice' becomes 'ad'.
'the female' becomes 'her' (I've seen this before).
'and' means one lot of letters go next to another.
'finally' suggests the final letters.
The last letter of 'male' is 'e'.
'ad'+'her'+'e'='ADHERE'
'forming' acts as a link.
(Other definitions for adhere that I've seen before include "Header (anag)" , "secure" , "Stick to - cement" , "Stick fast (to something)" , "Stick to, cling" .)