Transposons in chloroplast genomes are distributed inhomogeneously among gymnosperms and angiosperms

Abstract An occurrence and specificity of transposons in chloroplast genomes is considered. It is shown that the transposons are met in some genomes, and are nor in others. Rather decreased number of copies is peculiar for transposons found in chloroplast genomes, as well as the prevalence in their location (leading strand). Unique transposon Copia-18_BD-I is found in gymnosperms.