The Ames test is useful as a rapid screening test to identify those compounds that
A. will respond to chemical agents.
B. are mutagens.
C. respond to the deletion of DNases.
D. will protect an organism from cancer.
E. will respond to chemical agents AND will protect an organism from cancer.
B
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When does a CAM plant use rubisco?
a. daytime only b. nighttime only c. summer only d. winter only e. anytime the Calvin cycle is occurring
Although most of the mechanisms of evolution are nonrandom, the one that is absolutely random is ________
A) sexual selection B) natural selection C) artificial selection D) genetic drift
Dizygotic twins are no more or less genetically similar than are other pairs of ____________________.Fill in the blank(s) with the appropriate word(s)
All living organisms have evolved from a single common ancestor. The existence of which molecule lends the greatest support to this statement?
a. phospholipids b. ribosomal RNA c. transfer RNA d. DNA e. messenger RNA