Which form of selection is most likely to contribute to speciation over time?
a. stabilizing selection
b. directional selection
c. diversifying selection
d. sexual selection
c. diversifying selection
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The rationale for including the plasmid that was not cloned with the linker was
A. the plasmid without the linker served as a positive control to demonstrate that the assay was performing as expected B. that the plasmid was used to make sure there was no RNA degradation C. the plasmid was used to make sure there was no DNA degradation D. the plasmid was included as a carrier to help separate the RNA that was produced from the unincorporated radioactive nucleotides. Bloom's Level:
Who discovered and described diverse protists?
a. Anton van Leeuwenhoek b. Matthias Schleiden c. Theodor Schwann d. Rudolf Virchow
Enzymes function to
A. react with other enzymes to form a product. B. regulate messages between cells. C. catalyze chemical reactions. D. transport molecules and ions across membranes.
Describe what scientists feel may be the first step in the evolution of cellular organization.
What will be an ideal response?