According to the selfish DNA hypothesis, which symbiotic relationship most closely resembles that of transposable elements that move within the organism’s genome without preventing survival of the organism?
A. mutualism
B. commensalisms
C. parasitism
D. competition
E. neutralism
C. parasitism
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Charles Chamberland developed porcelain filters that allowed other scientists to demonstrate that viruses are smaller than bacteria.
Answer the following statement true (T) or false (F)
Species richness in a habitat depends upon
__________ of each species. a. the history of the habitat b. the resource needs c. the capacity for dispersal d. the unique physiology of the species e. all of these
The movement of oxygen and hydrogen in the form of water takes place in which cycle?
a. global water cycle b. atmospheric cycles c. sedimentary cycles d. solar-plant cycle e. all of these
Which of the following examples is incorrectly paired?
a. schooling fish?aggregated distribution b. nesting seabirds?random dispersion c. grove of aspen?clumped dispersion d. flour beetle larvae?random dispersion e. adult sand pine?uniform dispersion