Fig. 6

Arginine-Lysine Frequencies for Protamine DNA Binding Regions. Box plots of the arginine-lysine frequency for the DNA binding region of eutherian P1 protamines, the hypothesised DNA binding region of metatherian sperm protamines, and the whole sequence of fish protamines for comparison. Individual arginine-lysine frequencies are plotted next to the associated box plot. For min, quartile, and max data see Table 2