Allow a daughter to attend US institute (5)
I believe the answer is:
admit
'allow' is the definition.
(admit can mean to allow or accept)
'a daughter to attend us institute' is the wordplay.
'daughter' becomes 'd' (genealogical abbreviation).
'to attend' means one lot of letters go next to another.
'us institute' becomes 'MIT' (Massachusetts Institute of Technology).
'a'+'d'+'mit'='ADMIT'
(Other definitions for admit that I've seen before include "Come clean" , "Allow to enter; own up" , "Usher in" , "Confess; allow in" , "Confess (to something)" .)