All animals share which of the following derived traits?
All animals share derived trait of extracellular matrix containing collagen particularly fibrillar and type IV network forming basal lamina underlying epithelia, providing tensile strength and polarity signals through integrin, laminin and proteoglycan interactions. No other kingdom synthesizes true collagen triple helix with hydroxyproline repeats in organized sheets. Additional shared characters include cadherin-mediated cell adhesion, tight and adherens junctions, Wnt β-catenin signaling, regulated caspase apoptosis and Hox patterning. Cell wall and photosynthesis belong Plantae, siliceous
Ref: Alberts Molecular Biology of Cell ECM; Campbell Biology 12th ed. Chapter 32 Animal Synapomorphies