What is the age of planet Earth? When did the oceans form? What is the age of the earliest known microfossil?
Answer to relevant QuestionsWhat is the difference between a gene tree and an organismal tree? What is the “species problem” and why is the concept of microbial species difficult to resolve? What is the endosymbiotic hypothesis for the origin of mitochondria and chloroplasts? What evidence supports this hypothesis? Imagine that you have discovered a new form of microbial life, one that appears to represent a fourth domain. How would you go about characterizing the new organism and determining if it actually is evolutionarily distinct ...Why is the enzyme hydrogenase useful to Desulfovibrio even when it is not grown on H2 as electron donor?
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