Both legal and blood ties are found in the the relationship between a husband and wife is based on legal ties; however, the relationship between a parent and child may be based on either blood ties or legal ties, depending on whether the child has been adopted.

The answer is: stepfamily.

 When idividuals end a relationship or a family unit, usally they look for another partners to form a new family. It would be considered a stepfamily, in the case of one of them or both have children. Since one of the them is the biological parent and the other is the stepfather, the latter can have legal ties with the child(ren). Both ties, blood and legal are present in this stepfamily.

experiments.

surveys.

questionnaires.

interviews.

case studies.

participant and non-participant observation.

observational trials.

studies using the delphi method.

most cajuns resided in acadiana, where their descendants are still predominant