Fig. 3. Synergistic effects of combination between mutations in members of the CAF1 complex. Bar chart showing percentage of the two types of abnormal pollen at the tricellular mature stage in msi1-1/+, fas1-1/+, fas2-4/+, msi1-1/+;fas1-1/+ and fas1-1/+;fas2-4/+ mutant Arabidopsis plants. Gray bars correspond to arrested bicellular pollen and black bars to arrested microspores. Error bars correspond to standard errors calculated on the basis of several samples of 100 pollen grains, and the size of the total population analyzed (n) is indicated above each column.