What distribution of traits in the taxa (I–IV) linked by the phylogeny below is consistent with the sensory bias model of sexual selection? M+/– = Male trait present/absent, fe-male preference for trait present/absent
a. I: P+/M–; II: P+/M–; III: P+/M+; IV: P+/M–
b. I: P–/M–; II: P–/M–; III: P+/M+; IV: P–/M–
c. I: P–/M–; II: P+/M–; III: P+/M+; IV: P+/M–
d. I: P–/M–; II: P–/M–; III: P+/M+; IV: P+/M–
e. A and C
E
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Which of the following is not a component of the bacterial RNA polymerase core enzyme?
A. subunit ? B. subunit ? C. subunit ? D. subunit ? E. subunit ?'
The development of multicellular organisms likely originated
a. from colonies of unicellular organisms of the same species. b. from endocytosis of other cells followed by mitosis. c. from cooperation between different species of cells. d. from colonies of numerous species of cells. e. from endosymbiotic eukaryotes.
The negatively charged phosphates of ATP influence one another by
A) positron emission. B) charge repulsion. C) resonance destabilization. D) standard free energy. E) All of the above are correct.
Which of the following oxidize H2S to SO4-2, the form of sulfur animals use for their metabolism?
A. Beggiatoa B. Desulfovibrio C. purple sulfur bacteria D. both Beggiatoa and purple sulfur bacteria E. both Beggiatoa and Desulfovibrio