Figure 1

Oligonucleotide profiles (word size k = 13) detailing the relative word frequencies between the X and 2L chromosomes (A) or the 3R and 2L chromosomes (B) of D. melanogaster. Results for 2 Mb of the X or the 3R chromosomes (x-axis) are shown. The y-axis reflects the relative frequency of words in the two chromosomes after size correction. Details in panel A show the repetitious internal structure characteristic of an X-specific satellite.