The rate differences between molecular clocks are due largely to differences in _____. Thus, the extreme case of a fast molecular clock is derived from a _____
A. the intensity of selection; histone proteins
B. the size of the molecule; pseudogenes
C. the intensity of selection; pseudogene
D. the size of the molecule; histone proteins
E. none of these
C
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The energy yield of any energy-transforming pathway
A. is fixed. B. is variable depending on the type of enzymes used. C. is variable depending on the amount of precursor metabolites removed for biosynthesis. D. is fixed by the amount of oxygen available.
Four of the five tissues listed below are found in a
cross-section of a eudicot root. Select the exception. a. cortex b. pith c. pericycle d. endodermis e. epidermis
Each time Cyrus drinks milk, he develops gas, bloating, and abdominal discomfort. Cyrus is probably ________
Fill in the blank(s) with correct word
The characteristics of a community are generally not dependent on the spatial scale at which the community is examined because communities are tightly integrated groups of species
Indicate whether the statement is true or false