Which of the following statements is correct?
a. Allopatric populations look different and use different resources.
b. Allopatric populations look different and use the same resources.
c. Allopatric populations look the same and use different resources.
d. Allopatric populations look the same and use the same resources.
e. Sympatric and allopatric populations both look the same and use the same resources.
D
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You are testing a drug that might be marketed as an anti-inflammatory agent. It would be a good choice if it possessed which of the following responses?
A) stimulates the release of prostaglandins B) blocks adenylate cyclase activity C) blocks an enzyme associated with arachidonic acid production D) stimulates the activation of platelets E) all of the above
Scientists develop a chemical that binds to molecules that make quorum sensing possible, rendering those molecules non-functional. If this chemical is incorporated into a mouthwash, how would it affect the community of bacteria that cause dental plaque?
A. Their negative effects would be reduced because they will no longer be able to produce mucilage and stick to teeth. B. Their negative effects would be reduced because they will no longer be able to produce the acid that damages teeth. C. Their negative effects would be increased because it will cause them to produce mucilage, allowing them to stick to teeth. D. Their negative effects would be increased because it will cause them to produce the acid that damages teeth. E. It would have no effect because they will still be able to form a biofilm and secrete the acid that damages teeth.
A frameshift mutation results in _______________________.
A. a normal protein due to the redundancy of the genetic code. B. errors in DNA replication. C. errors in DNA splicing. D. a change in all mRNA codons downstream from the mutation. E. a change in the third position of one codon.
Which of the following types of reproductive barriers separates a pair of insect species that could interbreed but for the fact that one lives on goldenrod plants and the other on autumn daisies in the same general area?
A) temporal isolation B) habitat isolation C) behavioral isolation D) gametic isolation