Figure 7.
Genomic signature of house finch DNA for two-, five-, and eight-letter words based on the 32-kb cosmid sequence. Dark pixels indicate high-frequency words and light pixels indicate low-frequency words. The 16 (42) words in the leftmost panel are indicated for convenience. The five-letter signature contains 45 words (pixels) and the eight-letter signature 48. The fact that the orientation of the four nucleotides is the same at all scales in the image, i.e., within any given quadrant of any size, contributes to the fractal nature of the image.
