Mechanisms of Intron Loss and Gain in the Fission Yeast Schizosaccharomyces
Figure 5
Adjacent introns tend to be lost together in fission yeasts.
The probability distribution of all possible numbers of adjacent lost intron pairs is shown, with the observed pattern marked by a circle. The probabilities exceeding the observed numbers of lost intron pairs were small and, therefore, adjacent introns tend to be lost together more frequently than by chance. Lost introns are categorized by A) S. pombe, B) S. japonicus, C) Ancestor of S. cryophilus, S. octosporus and S. pombe, D) Ancestor of S. cryophilus and S. octosporus.