This is kinda odd, it seems as though clade focuses only on lineage and not really biology.
The two are inseperable. You cannot understand the biology of an organism without understanding its lineage and relationships to other organisms. This fundamental understanding has driven a vast expansion of our knowledge. Figuring out how
hox genes function in fruit flies has illuminated the role and function
hox genes in humans. Understanding limb differentiation in sharks and chickens has explained limb formation in humans. Picking apart the DNA transcription and translation systems of Archaea has shed fresh light on the systems of Eukaryotes which are, in turn, studied in yeast which because of their deep shared history with us helps us understand our own systems. Mitochondria don't make sense until you understand that they were once free living bacteria captured by endosymbiosis in an ancient Eukaryotic cell.
The list goes on, and on, and on.
When Dobzhiansky (a Christian who believed that God created the universe) said "Nothing in Biology Makes Sense Except in the Light of Evolution" he was entirely right.