Distribution of various repeats and features on chromosome A3. The long arm of chromosome A3 is shown on the x-axis and is numbered from the beginning of contig 1 to the end of contig 9 by joining up the physical gaps. The y-axis represents genes, ESTs, and the various repeats plotted relative to the nucleotide position on the chromosome. The densities of genes, ESTs, and the repeats were obtained by analyzing the sequence every 100 kb using a 10-kb sliding window. LINE, long interspersed nuclear element.