Which of the following is NOT related to genetic drift?
A. Founder effect
B. Bottleneck effect
C. Sexual selection
D. Neutral variation
E. Non-Darwinian evolution
C. Sexual selection
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It is estimated that the mass of bacteria and fungi in the top six inches of an acre of soil is
A. 2 tons. B. 100 lb. C. 10 tons. D. 500 lb.
Which gene product would be most useful for distinguishing between a microsporidian and a blastocladiomycete?
A. Rubisco B. Chitin C. DNA polymerase D. Phospholipidase E. ATP synthase Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about microsporidians and blastocladiomycetes? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
For many years scientists believed that almost all animal lineages burst into being during the Cambrian era (just after the end of the Precambrian super eon)
However, there have been many recent findings of animal-like fossils and "trace fossils" (fossils of an animal-like organisms movement) from the late Precambrian. Which of the following best explains why it took so long to realize there was animal-like life in the Precambrian? A) Animals from the late Precambrian had soft bodies. B) There were many hard-shelled animals in the Cambrian. C) The global climate was such that there was poor fossilization in the Precambrian. D) There were very few animals during this period.
Dogs scent-mark by defecating and urinating in an area, while cats scent-mark by rubbing against objects. Both of these increase the animals level of fitness and are examples of
A. sexual selection. B. altruism. C. territoriality. D. foraging.