Seems dad has turned against fruit (7)
I believe the answer is:
appears
'seems dad' is the definition.
'appears' can be an answer for 'seems' ('appear' can be a synonym of 'seem'). I'm not certain of the 'dad' bit.
'turned against fruit' is the wordplay.
'turned against' becomes 'ap' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'fruit' becomes 'pears' (I've seen this before).
'ap'+'pears'='APPEARS'
'has' is the link.
Can you help me to learn more?
(Other definitions for appears that I've seen before include "Seems" , "Materialises" , "is exhibited" , "Looks like" , "Comes into view" .)