Figure 1

Repetition of microsatellite pairs. A) A repetitive microsatellite pair (rMP) of D. melanogaster. The pair of microsatellites (CATAA)n and (TTTTAT)n are localized at different locations in D. melanogaster chromosomes and in each location the distance between the two microsatellites is consistently 138 bp. B) The locations of the rMP are indicated by short horizontal lines (dark blue) by their mid-point positions in the chromosome. The chromosomes are shown as long vertical lines of different colors. C) A subset of rMPs and their relative distribution between chromosome X and chromosomes 2L (blue), 3L (green) and 3R (red). The corresponding locations of these rMPs in chromosome X are shown by different colors relative to the autosomes. The simple sequence motifs of the paired microsatellites and their intervening distances (in bp) are shown to the right end of the figure.