#Question id: 4966
#Unit 11. Evolution and Behavior
If it were possible to conduct sophisticated microscopic and chemical analyses of microfossils found in 3.2-billion-year-old stromatolites, then within such microfossils, one should be surprised to observe evidence of:
I. double-stranded DNA
II. a nuclear envelope
III. a nucleoid
IV. a nucleolus
V. nucleic acids
#Question id: 4960
#Unit 11. Evolution and Behavior
Letʹs say that a hypothetical submersible robot was used to collect samples of sedimentary rock from the sea floor along the section illustrated. The robot moved back and forth along the transect, collecting first from site A, then site III, then site B, then site II, and lastly site D. Assuming that sedimentation has occurred at a constant rate along the transect over the past million years, rearrange the sites mentioned above on the basis of the thickness of the sediments overlying the igneous rock, from thickest to thinnest.
#Question id: 4959
#Unit 11. Evolution and Behavior
If a fossil is encased in a stratum of sedimentary rock without any strata of igneous rock (e.g., lava, volcanic ash) nearby, then it should be
#Question id: 4564
#Unit 11. Evolution and Behavior
Who would have proposed that the boundaries between each stratum mark the occurrence of different localized floods?
#Question id: 4565
#Unit 11. Evolution and Behavior
Darwinʹs mechanism of natural selection required long time spans in order to modify species. From whom did Darwin get the concept of Earthʹs ancient age?
#Question id: 4566
#Unit 11. Evolution and Behavior
Which of these naturalists synthesized a concept of natural selection independently of Darwin?