11 Jun Gradualism is a pattern of evolution in which
uestion
Gradualism is a pattern of evolution in which
A. a single species evolves into several closely related species.
B. several distantly related species develop similarities.
C. a species evolves at a slow, steady pace.
D. a species has periods of little evolution interrupted by periods of rapid evolution.
Several different species make up a
A. kingdom
B. phylum
C. family
D. genus
Similar DNA sequences in genes can be evidence of
A. binomial nomenclature.
B. mutations.
C. common ancestry.
D. different anatomy.
When a dairy farmer chooses to breed the cows that give the most milk in the herd, the farmers are following the principle of A. descent with modification.
B. artificial selection.
C. acquired characteristics.
D. natural selection.
When a dairy farmer chooses to breed the cows that give the most milk in the herd, the farmers are following the principle of A. descent with modification.
B. artificial selection.
C. acquired characteristics.
D. natural selection.
Charles Darwin’s theory of evolution by natural selection explains each of the following EXCEPT how
A. inherited traits are passed from parent to offspring.
B. species descend from common ancestors.
C. evolution takes place in the natural world.
D. species can become extinct.
Which scenario would most likely cause a mass extinction?
A. global temperatures drop several degrees after several massive volcanic eruptions
B. a wildfire burns a national park
C. a disease kills off a single species of predator within an ecosystem
D. a massive earthquake strikes North America
Why did oceans not exist on Earth nearly 4 billion years ago?
A. No water molecules were present.
B. Water remained a gas because Earth was very hot.
C. Water existed as ice because Earth was very cold.
D. There was no oxygen gas in the atmosphere.
In a bear population, the allele frequency of a gene for brown fur increases from 15 percent to 25 percent. What is happening to the population of bears?
A. The population is evolving.
B. The population is decreasing.
C. The population is not evolving.
D. The population is expanding.
James Hutton’s and Charles Lyell’s work suggests that
A. Earth is several million years old.
B. Earth is several thousand years old.
C. all fossils were formed in the last 1000 years.
D. all rocks on Earth contain fossils.
Linnaean classification involves
A. only large, general categories of organisms.
B. only small, specific categories of organisms.
C. both large and small categories of organisms.
D. no categories of organisms.
The most likely place to find fossils are in
A. the sap of ancient trees.
B. beach sand.
C. volcanic rock.
D. sedimentary rock.
The length of time required for half of the radioactive atoms in a sample to decay is its
A. half-life.
B. relative date.
C. radioactive date.
D. period.
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