Figure 1From: Copy number variation of ribosomal DNA and Pokey transposons in natural populations of DaphniaEukaryotic rDNA structure and location of qPCR primers to estimate Daphnia rDNA and Pokey number. Primers are indicated by short arrows. Pokey inserts into a specific TTAA site in the 28S gene, which is duplicated at either end of the inserted element. 18S, 18S rRNA coding region; 28S, 28S rRNA coding region; 5.8S, 5.8S rRNA coding region; IGS, intergenic spacer; ETS, external transcribed spacer; ITS, internal transcribed spacer; Tpase, transposase gene. The darker vertical bars at either end of Pokey represent the Terminal Inverted Repeats.Back to article page