paralogous genes

paralogous genes
genes in a single species that have similar DNA sequences and encode proteins with similar or related functions; they are likely to have originated from a single ancestral gene, diverging after duplication, e.g., the genes encoding α- and β-globin chains. Cf. orthologous g's.

Medical dictionary. 2011.

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  • orthologous genes — Genes related by common phylogenetic descent contrast with paralogous genes …   Dictionary of molecular biology

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  • orthologous genes — genes in different species that are similar in DNA sequence and encode proteins having the same function; they originate from a single ancestral gene that diverged after speciation, e.g., the genes encoding β globin chains in different… …   Medical dictionary

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