Lateral gene transfer means that phylogenetic analyses of different individual genes from the same set of organisms often yield results that are inconsistent with each other
What technique seems to avoid this problem and give us the clearest, most consistent view of the "tree of life"? A) the polymerase chain reaction (PCR)
B) molecular clock analyses
C) "shotgun" rRNA sequencing from environmental samples
D) Bayesian phylogenetic reconstruction
E) whole-genome phylogenetic analysis
E
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Spoilage of bread, which appears dark green-blue to black in color, is MOST likely caused by the fungus
A) Aspergillus niger. B) Batrachochytrium dendrobatidis C) Glomus spp. D) Rhizopus stolonifer.
Darwin's observation of vastly different species living in similar island environments led him to conclude that each
population had arisen separately from existing species on these islands, since the geographic isolation prevented migration of species from the mainlands. This scenario is an example of ____.
a. biogeography b. plate tectonics c. comparative morphology d. morphological convergence e. homologous structures
A hypothesis is
a. a statement of fact. b. often expressed negatively. c. a form of critical thinking. d. a testable prediction. e. none of these.
Which of the following would decrease central venous pressure?
A) increased respiratory activity B) standing up C) activity of skeletal muscles D) increased blood volume E) increased sympathetic activi