Final answer:
The three levels of distinction in biological classification between Order and Family involve grouping similar species into genera, similar genera into families, and similar families into orders, which reflects their phylogenetic relationships.
Step-by-step explanation:
The three levels of distinction between Order and Family in biological classification are part of the hierarchical taxonomy system first proposed by Carl Linnaeus in the 18th century. This system organizes species based on their similarities and is composed of several levels. Species that are most alike are grouped within a genus, similar genera are put together into a family, and similar families are then grouped into an Order. Continuing up the hierarchy, multiple orders are grouped into a Class, classes into a Phylum, and phyla into a Kingdom. At the highest level, all living organisms are classified into Domains. The distinctions between each level of classification are subjective, but aim to reflect phylogenetic relationships and levels of relatedness.