Frameshift mutations are more likely to have an impact at the phenotypic level because they:
Question 8 options:
are the result of a change in a single nucleotide.
are the result of exposure to radiation.
produce a protein having no function.
are mobile pieces of DNA. - ANSWERSproduce ...
human evolution exam 1 ch2-4
Questions & Answers
Frameshift mutations are more likely to have an impact at the phenotypic level because
they:
Question 8 options:
are the result of a change in a single nucleotide.
are the result of exposure to radiation.
produce a protein having no function.
are mobile pieces of DNA. - ANSWERSproduce a protein having no function
The advantageous "attributes" to which Darwin refers are now known as:
Question options:
traits.
genes.
alleles.
chromosomes. - ANSWERStraits
Adaptive radiation occurs when:
Question options:
one species gives rise to multiple closely related species.
several species adapt to one environment.
species adapt to environments with high radiation levels.
an individual adapts to varying environments. - ANSWERSone species gives rise to
multiple closely related species.
Evolutionary synthesis is:
Question options:
the concept of evolution through natural selection.
,a unified theory of evolution that combines genetics with natural selection.
a combination of the inheritance of acquired characteristics and natural selection.
the combination of the theory of evolution and Linnaean taxonomy. - ANSWERSa
unified theory of evolution that combines genetics with natural selection.
Thomas Malthus's contribution to natural selection is the:
a. binomial taxonomic system of naming species.
b. theory that the earth's old age is based on geologic evidence resulting from
cataclysmic
events.
c. observation that an abundance of food would allow a population to increase
geometrically
and indefinitely, but there simply is not enough food, so populations are limited by food
supply.
d. theory that environmental resources increase to population pressures. - ANSWERSc.
observation that an abundance of food would allow a population to increase
geometrically
and indefinitely, but there simply is not enough food, so populations are limited by food
supply.
Darwinian evolution proposes that:
a. species adapt and change over time based on the environment.
b. an individual can change within its own lifetime.
c. species adapt based on individual goals.
d. individuals determine their own biological adaptations. - ANSWERSa. species adapt
and change over time based on the environment.
James Hutton is associated primarily with:
a. adaptation.
b. catastrophism.
c. uniformitarianism.
d. principles of heredity. - ANSWERSc. uniformitarianism.
According to Darwin, natural selection operates at the level of:
a. individuals.
b. genes.
c. populations.
d. species. - ANSWERSa. individuals.
How was Darwin influenced by Thomas Malthus's work on population growth?
a. Darwin was interested in Malthus's examination of population changes in pea plants.
b. Darwin was influenced by Malthus's work on demography and population responses
to
food availability.
, c. Darwin liked the concept of Latin taxonomic classification as it pertained to human
groups.
d. Darwin was greatly influenced by research on acquired characteristics. -
ANSWERSb. Darwin was influenced by Malthus's work on demography and population
responses to
food availability.
The forces of evolution include:
a. gene flow, mutations, chromosomes, and genes.
b. mutations, genes, and genetic drift.
c. natural selection, variation (mutation) gene flow, and genetic drift.
d. natural selection, genes, alleles, and chromosomes. - ANSWERSc. natural selection,
variation (mutation) gene flow, and genetic drift.
How did Lamarck contribute to the theory of evolution?
a. He discovered genetic mutation through experiments with pea plants.
b. He proposed the concept of natural selection after his voyage to the Galapagos
Islands and his study of finches.
c. He proposed the first serious model of how traits are passed on from parent to
offspring
through inheritance of acquired characteristics, though that idea turned out to be
incorrect.
d. He proposed a concept known today as gene flow. - ANSWERSc. He proposed the
first serious model of how traits are passed on from parent to offspring
through inheritance of acquired characteristics, though that idea turned out to be
incorrect.
The scientist who coined the name Homo sapiens for human beings and placed them in
a higher taxonomic group (primates) was:
a. Charles Darwin.
b. Georges Cuvier.
c. Carolus Linnaeus.
d. Robert Hooke. - ANSWERSc. Carolus Linnaeus.
In your textbook, the lower frequency of sickle-cell anemia among present-day
Americans of West African ancestry as compared to people living in West Africa blacks
is attributed to:
a. genetic drift.
b. gene flow.
c. new mutations.
d. none of the above - ANSWERSb. gene flow.
Why are Darwin's finches considered good examples of natural selection?
a. They are found on every continent.
b. They originated in North America, according to fossil evidence.
c. They embody the idea of descent with modification.
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