Genomic DNA was extracted from the fin clips with the DNeasy 96 Blood and Tissue Kit (Qiagen) according to the manufacturer’s protocol. PCR was carried out using Colorless GoTaq Flexi Reaction Buffer (Promega) with PCR dnd primers19 (link). The PCR product was purified with QIAquick PCR purification Kit (Qiagen) and measured via Qubit Fluorometric Quantitation (Invitrogen). Purified and quantified PCR products were cloned into PCR4-TOPO using the TOPO TA cloning kit for sequencing (Invitrogen). Cloned fragments were sequenced with M13 forward and reversed primers using BigDye 3.1.
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