Final answer:
Affinal kinship is related to marital or contractual relationships and is not biological. It's depicted with a double line on kinship charts, highlighting the cultural aspects of family ties.
Step-by-step explanation:
Affinal kinship refers to relationships established through marriage or mutual agreement, as opposed to biological or blood connections. This conceptual difference is rooted in cultural constructs rather than biology. Affinal ties are contractual and can typically be dissolved, which is unlike the permanent nature of genetic relationships indicated in consanguineal kinship. Additionally, the acknowledgment of fictive kinship demonstrates that relationships and familial bonds can extend beyond biological ties, reflecting the deep impact of culture on our understanding of family. Kinship charts differentiate between consanguineal and affinal relationships, depicting affinal connections with a double line, whereas consanguineal ties are represented by a single line.