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Lecture 12

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Question:

2-methylhopanes are biosynthesised by cyanobacteria (oxygenic photosynthetic bacteria) and are found in 2.7Gya shales, they are indicators of

Author: Magali



Answer:

Evolution of oxygenic photosynthesis (produces oxygen) well before the atmosphere became oxidizing. HOWEVER 2-MeBHPs have been found in an anoxygenic phototroph! 2-methylhopanes can’t be used for biomarkers of oxygenic photosynthesis


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Author

Magali
Magali