Molecular clocks are based primarily on rates of
A. neutral mutations.
B. favorable mutations.
C. natural selection.
D. horizontal gene transfer.
E. detrimental mutations.
Answer: A
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So far, three classes of chromatin remodeling complexes have been identified. Which of the following pairings is correct?
A. SWI/SNF complexes ? activation B. SMC complexes ? repression C. ISWI complexes ? activation D. Mi2/NURD ? activation E. SWI/SNF complexes ? repression
During the formation of a regional economic core, ancillary industries must be in place before forward linkages are created
Indicate whether this statement is true or false.
By volume, what percentage of cells in blood are white blood cells?
a. 15 percent b. 50 percent c. 1 percent d. 85 percent
The complement components react ______.
A. in a cascade B. in parallel C. differently at different temperatures D. simultaneously