Microscopic structures of pachytene chromosomes of tomato (a) and pepper. (b). The pachytene chromosomes were stained with DAPI and the images were converted to black and white. The heterochromatic and euchromatic regions are shown as bright and dark lines, respectively.
Park et al. BMC Genomics 2011 12:85 doi:10.1186/1471-2164-12-85