Fig. 1From: Identification of the meiotic toolkit in diatoms and exploration of meiosis-specific SPO11 and RAD51 homologs in the sexual species Pseudo-nitzschia multistriata and Seminavis robusta Phylogenetic tree of Rad21 proteins inferred from maximum likelihood analysis. Numbers on the branches indicate bootstrap support from 1000 replicates. Among-site substitution rate heterogeneity was corrected using two gamma-distributed substitution rate categories and WAG with frequencies (WAG + F) substitution model for amino acid substitutions. Diatom sequences are indicated in boldBack to article page