Sequence_accession_number,Species_name,GC_content,Sequence_length,Sequence_status,Is_protein_coding_sequence,Is_annotated HB440016,Branchiostoma belcheri,52.2435897435898,312.0,observed,1,1 MB032850,Branchiostoma belcheri,53.8461538461538,1092.0,observed,1,1