= Metagenomics
<Metagenomics> studies genetic material collected from a mixed community, often without first culturing its members separately. <DNA sequencing> can reveal community composition and potential metabolic capacities. A detected <gene> indicates sequence potential; its expression and actual contribution to <metabolism> require additional evidence. <Genome assembly> from mixed samples is difficult because closely related <organisms> can share sequences and differ in abundance. <Talking Glossary of Genomic and Genetic Terms by NHGRI>[Metagenomics entry]{ref}
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