From: Identification and characterization of novel amphioxus microRNAs by Solexa sequencing
 | miRNA genes present as a single copy | miRNA genes present as two copies | miRNA genes present as three copies | Total miRNA genes | Mature miRNAs | Mature miRNA*s |
---|---|---|---|---|---|---|
Conserved miRNA genes | 36 | 8 | 1 | 55 | 45 | 27 |
Amphioxus-specific miRNA genes | 49 | 3 | 1 | 58 | 53 | 18 |
Sum | Â | Â | Â | 113 | 98 | 45 |