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(see multigene family)
A set of identical, or once-identical, genes, derived from a single parent gene; need not be on the same chromosomes; classic example is the globin family in vertebrates.
a set of gene s defined by presumed homology , i
A set of genes in one genome all descended from the same ancestral gene.
A gene family is a set of genes defined by presumed homology, i.e. evidence that the genes evolved from a common ancestral gene. They generally share some biochemical activity. Genes are generally categorized into families based upon shared sequence motifs and similarities in structure.
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