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Evolutionary Developmental Biology

Evolutionary developmental biology, or evo-devo, is a biological discipline that investigates the relationship between embryonic development and evolutionary change.

Overview

Hox genes, which specify positioning along the anterior-posterior axis, are conserved across diverse animal lineages such as insects and vertebrates, serving comparable patterning functions despite extended periods of divergence. Comparative studies indicate that major structural body plan transitions predominantly stem from regulatory changes altering the timing, spatial location, and levels of conserved gene expression rather than the emergence of novel genes.

Why it matters

Evo-devo provides developmental mechanisms for understanding macroevolutionary transitions. Shared regulatory signaling pathways, such as Wnt, Hedgehog, and Notch, also inform models of congenital conditions and oncogenic processes.

What it builds on

• Gene Regulation

Where it leads

• Developmental Biology

Related concepts

• Natural SelectionconceptualEvo-devo reveals developmental constraints that channel which variations natural selection can act upon, limiting evolutionary possibility
• ModularityappliedModular body plan organization allows evolutionary modification of individual segments or structures without disrupting the whole organism
• Self-OrganizationappliedEmbryonic pattern formation involves self-organizing chemical gradients that establish body axes through reaction-diffusion mechanisms
• BiologylogicalEvolutionary Developmental Biology provides conceptual grounding that helps explain Biology in this knowledge graph.