The condition in which it takes larger or more frequent doses to produces the same effect is drug ____
a. tolerance
b. addiction
c. habituation
d. concealment
e. depression
ANSWER: a
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Crossing over is __________.
A. the formation of tetrads B. the exchange of corresponding portions of homologous chromosomes C. the movement of genetic material from one chromosome to a nonhomologous chromosome D. an independent assortment of chromosomes
Which of the three parts of a nucleotide (nitrogen base, phosphate, sugar) lies between the other two?
____________________ Fill in the blank(s) with the appropriate word(s).
Which best describes a population that forms a new species within the same geographical region as the original
species? a. allopatric speciation b. sympatric speciation c. parapatric speciation d. autologous speciation e. heterogeneous speciation
Acoustical communication includes all of the following EXCEPT:
a. alarm calls. b. cricket chirps. c. honey bee waggle dance. d. bird song. e. territorial howling of wolves.