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. 2022 Sep 26;11(10):1403. doi: 10.3390/biology11101403

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Eight Can_b1Y copies (A–H) illustrating their retrotransposition via T⁺ mechanism. The left coordinate, terminator structure, and poly(A) tail length are specified. The left (“ancestor”) boxes include copies present in the genomes of the German Shepherd, Great Dane, and Boxer; the right boxes include daughter copies present in one or two dog breeds. Notice that the daughter copies have much longer poly(A) tails; in three cases (B, C, and F), the terminators are significantly shortened in daughter copies relative to parental ones.