BSCS Biology: A Molecular Approach

Chapter 19: Changes in Species

Origin of Species

1.
What is the historic significance of Atriplex robusta?
A)It is one of the most recent instances of speciation among multicellular organisms.
B)It was the first plant to be hybridized.
C)It was artificially selected for its properties in protecting roadways from erosion.
D)It is the first cloned plant.
2.
Differences in coloration between these two squirrel species are due to the geographic separation imposed between them by what physical feature?
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A)the Atlantic Ocean
B)the Pacific Ocean
C)the Panama Canal
D)the Grand Canyon
3.
A slowdown in the rate of large-scale evolutionary change is said to be a period of ____.
A)stasis
B)adaptive radiation
C)polyploidy
D)gradualism
4.
A short period of rapid evolutionary change, which establishes a new species, is known as ____.
A)gradualism
B)polyploidy
C)punctuated equilibrium
D)adaptive radiation
5.
Polyploidy is a duplication of what?
A)species
B)a controversial experimental result
C)lipid formation
D)chromosomes during cell division
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