Fig. 1

Transcriptomic statistics. Phylogenetic relationships between the species are schematized on the left (referring to [33]). BUSCO completeness is calculated on the whole transcriptome. N° of CDSs represents the number of transcripts for which an ORF could be extracted, i.e. coding sequences. Germline-related CDSs correspond to the number of ORF-containing transcripts that were upregulated in germline-related samples (the percentage is calculated on the whole set of ORF-containing transcripts). Phylum-specific germline CDSs corresponds to the percentage of upregulated germline-related CDSs for which not even one homologous sequence could be found outside the belonging phylum. Phylum-specific non-germline CDSs is the same percentage calculated on all other transcripts (non-germline ones). Metazoa-specific germline CDSs is the percentage of germline-related CDSs that had homologues in at least two animal phyla (therefore, excluding the phylum-specific ones), but no homologues shared with unicellular Holozoa. Metazoa-specific non-germline CDSs is the same percentage calculated on all other transcripts (non-germline ones). Phylum-specific ratio is calculated as column A over column B. Metazoa-specific ratio is calculated as column C over column D. Phylum- and Metazoa-specific ratio significantly lower than 1 are depicted in green; those higher are depicted in blue (statistical significance assessed with odds ratio tests)