What is homology in biology?

Homology describes similarities between species resulting from shared ancestors, reflecting the branching of the phylogenetic tree. Homologies abound in the biological world, such as oxidative phosphorylation, while brains are a characteristic of animals. Analogy can emerge independently in both species. Genetics has refined the concept of homology, with orthology, paralogy, and xenology. Homology is a […]

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