Which is an incorrect match of taxonomic category and common name?
A. Actinopterygii/ray-finned fish
B. Squamata/lizards and snakes
C. theropods/crocodiles
D. Dipnoi/lungfish
E. Apoda/caecilians
Answer: C
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E are _______ major families of RNA containing viruses that infect vertebrates
A. 2 B. 5 C. 7 D. 13
Dropping irrelevant variables from a regression equation might provide a better regression in what sense?
A. Might facilitate more efficient/precise estimates of the treatment effect (smaller standard errors). B. Only when the irrelevant variables are uncorrelated with the treatment(s). C. Only if the irrelevant variables have low p-values. D. Only if the irrelevant variables have many outliers.
What type of symbiotic relationship is exemplified by mycorrhizal fungi?
A. Parasitism B. Commensalism C. Atavism D. Mutualism
Frederick Griffith discovered
A. transformation. B. transposons. C. the lac operon. D. DNA. E. conjugation.