Example sentences for: oxygenic

How can you use “oxygenic” in a sentence? Here are some example sentences to help you improve your vocabulary:

  • 8 Ga [ 14 15 ] usually is considered to be the earliest record of cyanobacteria [ 10 ] . However, the 2-methylhopane biomarker of cyanobacteria has been detected in lower abundance in other prokaryotes, and many taxa (especially anaerobic species) have not been examined for the biomarker [ 15 16 17 ] . Also, the origin of oxygenic photosynthesis may have occurred at some time later than the origin of cyanobacteria.

  • 1), including the related origin of oxygenic photosynthesis.

  • 4 Ga), and may have been global in extent [ 34 ] . It has been proposed that a major rise in oxygen at this time lowered global temperatures and may have triggered the glaciations [ 35 ] . If this is true, and given the time estimates here, the evolutionary innovation of oxygenic photosynthesis may have had a relatively rapid impact on the environment.

  • Among the suggested sister groups were the Deinococcales [ 40 ] and spirochetes [ 41 42 ] . Our analyses do not support these earlier claims, but are in agreement with the recent analyses of genes involved in chlorophyll biosynthesis [ 43 ] , which indicated that the low GC Gram positive heliobacteria are closest to the last common ancestor of all oxygenic photosynthetic lineages.

  • Geologic evidence bearing on the origin and rise in oxygen likewise has been debated [ 18 19 ] . Although the existence of banded iron formations prior to 3 Ga sometimes has been used as evidence for the early evolution of oxygenic photosynthesis, oxygen-independent mechanisms of iron deposition are known [ 20 ] .

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