The way a eukaryotic cell efficiently regulates the expression of multiple genes is to
a. have individual activators for individual genes.
b. have a few activators that can interact with small subsets of genes.
c. have activators that serve as catalysts for further activator protein synthesis.
d. have a few activators that work in different combinations to activate different genes.
e. have a single activator that undergoes modifications to enable interaction with different
promoters.
D
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Which naturalist developed the same ideas about natural selection as Darwin, only 20 years later?
a. Darwin b. Wallace c. Jean Baptiste Lamarck d. Cuvier e. Charles Lyell
Atoms or clusters of atoms that are covalently bonded to carbon and influence the behavior of organic compounds are
known as ____. a. ions b. anhydrides c. antioxidants d. acids e. functional groups
The wide-ranging effect of a single gene is called ____
a. homozygous b. segregation c. pleiotropy d. independent assortment e. co-dominance
Primary succession may be seen:a
on new lava or on sand dunes. b. after a fire. c. when farmland is abandoned. d. only in tropical rain forests. e. in any community that has periodic disturbances.