Why does Ernst Mayr\'s biological species concept NOT apply to Archaea and Bacteria? Bacteria and Archaea do not have life cycles characterized by meiosis and fertilization. Archaea and Bacteria have circular chromosomes. Many Bacteria and Archaea live in environments where oxygen is absent. Prokaryotic organisms are too small to track in natural environments. Solution We know that a species is an interbreeding population, which is isolated from other populations, this applies for eukaryotic species. The bacteria and archaea undergo asexual reproduction in which they do not have meiosis and fertilization. Hence option A is answer..