Animal classification has undergone a reassessment in recent years because of:
A. Carl Linnaeus' new data
B. comparisons of DNA and rRNA among different taxa
C. new, genetically engineered species
D. developing resistance to antibiotics
E. all of the choices provided
B. comparisons of DNA and rRNA among different taxa
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The network of branching filaments that form the main body of a multicellular fungus is the:
A. mycelium. B. hypha. C. fruiting body. D. spore. E. rhizoid.
Barr bodies are associated with ________.
A. signal transduction B. proto-oncogenes C. frameshift mutations D. X chromosome inactivation
Which division of meiosis is referred to as 'reduction division?'
A. meiosis I B. meiosis II
In science, reliable results are obtained when
A. experiments give the same results repeatedly. B. a careful scientist sees a clear pattern. C. additional testing is required. D. most experiments give the same results.