Related Experiment Video
Updated: Jul 20, 2026

Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing
Published on: February 10, 2023
Comparison of chaetognath mitochondrial genomes and phylogenetical implications
1ER Biodiversity and Environment, Case 5, University of Provence, Place Victor Hugo, 13331 Marseilles Cedex 3, France. eric.faure@up.univ-mrs.fr
Abstract:
Two complete mitochondrial genomes (mtDNAs) of chaetognaths, Spadella cephaloptera and Paraspadella gotoi, have been recently published. These genomes are highly unusual. They are the smallest metazoan mtDNAs so far known; atp6 and atp8 genes are missing; lastly, our reanalysis has evidenced that, contrarily to what has been previously published for one sequence, both contain a unique transfer RNA (tRNA(Met)) evidencing that both have the same gene content. Indeed, even if the gene order seems very different, two gene blocks are conserved. In addition, comparison of gene arrangement suggests phylogenetical relationships between chaetognaths and some lophotrochozoa like annelids and molluscs.
Related Concept Videos
Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes
Evolutionary Relationships through Genome Comparisons
Animal Mitochondrial Genetics
Microbial Phylogeny
Export of Mitochondrial and Chloroplast Genes
Phylogeny

