Figure 4. Phylogenetic analysis of LTR retrotransposons in B. cinereabased on alignment of the reverse transcriptase domains. The tree was constructed by the neighbor-joining method (Saitou and Nei, 1987) and rooted using insect Gypsy LTR retrotransposons as outgroups. The number indicates the frequency with which a given branch appeared in 1000 bootstrap replications. Accession numbers for the elements in databases are as follows: Boty, X81791; Boty-18, XP_001557158; Boty-41, XP_001553972; Boty-51, XP_001552885; Boty-55, XP_001552584; Boty-56, XP_001552482; Boty-106, XP_001548698; Boty-117, XP_001548080; Boty-183, XP_001545956; Boty-213, XP_001545506; Boty-240, XP_001545348; Boty-II-76, XP_001550688; Boty-II-103, XP_001552861; gypsy, AAA70219.