It is the policy of the state of Connecticut to make available to adopted and adoptable persons who are adults (1) information concerning their background and status; to give the same information to their adoptive parent or parents; and, in any case where such adult persons are deceased, to give the same information to their adult descendants, including adopted descendants except a copy of their original birth certificate as provided by section 7-51; (2) to provide for consensual release of additional information which may identify the biological parents or relatives of such adult adopted or adoptable persons when release of such information is in the best interests of such persons; (3) except as provided in subdivisions (4) and (5), to protect the right to privacy of all parties to termination of parental rights, statutory parent and adoption proceedings; (4) to make available to any biological parent of an adult adopted or adult adoptable person, including a person claiming to be the father who was not a party to the proceedings for termination of parental rights, information which would tend to identify such adult adopted or adult adoptable person; and (5) to make available to any adult biological sibling of an adult adopted or adult adoptable person information which would tend to identify such adult adopted or adult adoptable person.