Directional selection generates a phenotypic shift ________
A) away from either extreme of the phenotype
B) toward an extreme of the phenotype
C) toward both extremes of the phenotype
D) toward the mean of the extremes of the phenotype
Answer: B
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Allopatric populations that are morphologically ____ use ____ resources
a. similar; similar b. similar; different c. different; different d. different; similar e. unrelated; mimicry
Scientists have found that extinction rates among ____ are accelerating rapidly
a. endangered species b. trigger species c. bird species d. amphibian species e. plant species
This biome is dominated by dwarf shrubs, grasses, and sedes that can tolerate long dark winters
A) deciduous forest (B) Tropical rain forest (C) Desert (D) Tundra (E) Taiga
Serratia marcescens can be identified by its distinctive blue-green pigment pyocyanin
Indicate whether the statement is true or false