What two gases were most abundant on early Earth?
A) CO2 and N2
B) CO2and H2
C) CH4 and H2
D) CH4 and CO2
Correct Answer:
Verified
Q15: Polyphasic taxonomy uses methods that include
A) phylogenetic.
B)
Q17: Molecular sequencing suggests that mitochondria arose from
Q17: The earliest RNA probably functioned in
A) catalysis.
B)
Q18: Using present terminology, how many bacterial phyla
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Q21: Because DNA:DNA hybridization reveals subtle differences in
Q22: Two eukaryotic organelles that are hypothesized to
Q23: Which statement most closely expresses our present
Q24: A sequence variant of a gene is
Q25: Which molecular technique requires the complementary strand
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