摘要: Metazoan genomes are being sequenced at an increasingly rapid rate. For each new genome, the number of protein-coding genes it encodes and amount functional DNA contains known only inaccurately. Nevertheless, there have been considerable recent advances in identifying non-coding sequences that remained constrained diverse species. However, these approaches struggle to pinpoint genomic some species but absent or not others. Yet is here, encoded lineage-specific sequence, we expect physiological differences between be most concentrated.