Mate-attracting features such as the bright plumage of a male peacock result from
A) intersexual selection.
B) artificial selection.
C) disruptive selection.
D) stabilizing selection.
Answer: A
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Which statement about the geologic time scale
is incorrect? a. Mammals originated early in the Mesozoic era. b. Adaptive radiation of flowering plants, insects, and birds took place during the Mesozoic era. c. Mass extinction of the dinosaurs occurred about 65 million years ago. d. Reptiles originated during the Paleozoic era. e. Eukaryotes originated during the Proterozoic eon.
A mole becomes suspicious when it is greater than 6 mm in diameter. How big is 6 mm approximately?
A. about the size of a pencil eraser B. about the size of a quarter C. just barely visible, about the size of a pin prick D. about the size of a nickel E. about the same as one of the letters in this question
The theory of catastrophism
a. was proposed by Lyell. b. indicates that a series of disasters necessitated separate acts of creation to replace species that became extinct. c. states that one worldwide disaster led to massive extinction and subsequent replacement by a new creation. d. held that after geologic events caused extinctions, the world was repopulated by the surviving species. e. has absolutely no basis in fact because extinctions just happen with no apparent patterns.
Bioremediation is _____.
A.) the use of biological processes to remedy diseases B.) the use of prokaryotes in producing pharmaceutical products C.) the use of organisms to remove pollutants from the environment D.) the modification of prokaryotes for industrial purposes E.) the use of prokaryotes in producing transgenic organisms