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From this tissue, the lab sequences a section of a gene known as cytochrome c oxidase subunit 1, or CO1.—Elizabeth Kolbert, The New Yorker, 13 Mar. 2023 The specific sequence used was a fragment of the cytochrome c oxidase I (COI) mitochondrial gene that enables species to be identified without relying on any morphological indicators such as color or shape [4].—Ashton Yoon, Discover Magazine, 28 Mar. 2017
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