Sui generis
In sociology, the "sui generis" is what has been externalized, then internalized in the overall public and becomes a part of society that simply exists in its construct. It is not something that is not thought to have been created, because it is imbedded in everyone's way of thinking and being. Instances include the idea of love, or going to school, or clothing belonging to a specific gender. These examples are "sui generis" for they simply exist in society and are widely accepted without thoughts of where they come from or how they were created.
Surrogacy
Traditional surrogacy (also known as partial, genetic, natural or straight surrogacy) involves natural or artificial insemination of a surrogate. If the intended father's sperm is used in the insemination, then the resulting child is genetically related to the intended father and genetically related to the surrogate. If donor sperm is used, the resulting child is not genetically related to either intended parent but is genetically related to the surrogate.