Instead of concentric thylakoid membranes that share a center or axis , Cyanothece 's exhibit short , wavy and radially arranged. , All Cyanothece had nitrogenase activity at one time ; .
Some strains have lost the necessary genes .
Instead of concentric thylakoid membranes that share a center or axis , Cyanothece 's exhibit short , wavy and radially arranged. , All Cyanothece had nitrogenase activity at one time ; although some strains have lost the necessary genes .