Which of the following shows the correct chronological order (geologically oldest to most recent) of near or total extinctions for the organisms listed?
A) dinosaurs, psilopsids, marine invertebrates, large mammals
B) psilopsids, marine invertebrates, dinosaurs, large mammals
C) large mammals, marine invertebrates, dinosaurs, psilopsids
D) marine invertebrates, dinosaurs, psilopsids, large mammals
B
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Discuss the theory of secondary endosymbiosis and defend the theory by providing evidence that supports it
What will be an ideal response?
Consider the cladogram shown. Based on this cladogram, which species has the greatest number of ancestral character states (pleisiomorphies)?
A. 1
B. 2
C. 3
D. 4
E. 5
F. 6
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
Gather Content
· What do you already know about cladistics?
Consider Possibilities
· What other information is related to the question? Which information is most useful?
Choose Answer
· Given what you now know, what information and/or problem solving approach 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?
A very narrow pedigree, such as that for Egypt's Ptolemy dynasty, reflects
A) families with many adopted children. B) a very mild phenotype. C) many uncles marrying their nephews. D) families with many relatives having children with blood relatives
Which of the following tests does NOT provide information on the lowest concentration of drug effective on a pathogen?
A) Etest B) diffusion susceptibility test C) broth dilution test D) both the Etest and diffusion susceptibility test E) MBC test