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______________ is the exchange of sections of chromosomes between one chromosome and another.


A) Segregation
B) Speciation
C) Mutation
D) Crossing-over

E) None of the above
F) A) and B)

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The founder effect is interesting to study because


A) in small isolated populations, the presence or absence of certain genes becomes prevalent.
B) it happens a lot, especially in large populations.
C) it gives us a great deal of information about certain populations.
D) a and c are both correct.

E) B) and D)
F) A) and D)

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When gene flow occurs, it's effect is the opposite of genetic drift, because


A) it requires smaller populations to work.
B) it is very difficult to measure.
C) it decreases the genetic differences between populations.
D) it rarely happens in 21st Century cultures.

E) A) and B)
F) All of the above

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Charles Darwin was not the first person to discuss evolutionary processes, but he is famous because


A) he was the first to provide a comprehensive, well documented explanation of natural selection.
B) he studied apes extensively.
C) he studied genetics.
D) he was able to see that environment played no role in evolution.

E) A) and C)
F) All of the above

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In the 1930s and 1940s, scientists developed a synthetic theory of evolution. What are its major characteristics and how did this approach improve on earlier ones?

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The synthetic theory of evolution, also ...

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_____________ involve the application of evolutionary principles to the behavior of animals.


A) Sociobiology and behavioral ecology
B) Biology and chemistry
C) Anatomy and physiology
D) Zoology and botany

E) All of the above
F) B) and D)

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If the two genes, or alleles, for a trait are the same, the organism is


A) homozygous.
B) heterozygous.
C) an allele.
D) a genotype.

E) A) and B)
F) B) and D)

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If two genes, or alleles, for a trait are the same, the organism is ________ for the trait.


A) heterozygous
B) homozygous
C) monozygous
D) bizygous

E) B) and D)
F) B) and C)

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The genes of higher organisms are located on ropelike bodies called ____________.


A) genes
B) chromosomes
C) RNA
D) DNA

E) None of the above
F) A) and D)

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Mendel's units of heredity were what we now call ____________.


A) genes
B) meiosis
C) DNA
D) mitosis

E) C) and D)
F) A) and B)

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______________ is a change in the DNA sequence that can produce an altered gene.


A) RNA
B) Species
C) Segregation
D) Mutation

E) A) and D)
F) A) and C)

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In what circumstances can natural selection be observed? What do these observations tell us about evolution?

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Natural selection can be observed in var...

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Why do many people see a conflict between religion and evolution? Do you see that same conflict?

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Many people see a conflict between relig...

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______________ is a population that consists of organisms able to interbreed and produce fertile and viable offspring.


A) Species
B) Gene
C) DNA
D) RNA

E) All of the above
F) B) and C)

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Briefly summarize speciation as it relates to Darwinian evolution.

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Speciation is a fundamental concept in D...

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Natural selection proceeds ___________________.


A) never
B) only when individuals within a population vary
C) when Darwin says it does
D) always very rapidly

E) C) and D)
F) None of the above

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Each member of a gene pair or group is called _____________.


A) a gene
B) homozygous
C) heterozygous
D) an allele

E) A) and C)
F) A) and D)

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The main process that increases the frequency of adaptive traits through time is called


A) catastrophism.
B) natural selection.
C) creationism.
D) mutual adjustment.

E) A) and C)
F) A) and D)

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The genetic makeup of a pea plant is called its


A) genotype.
B) stereotype.
C) phenotype.
D) prototype.

E) A) and B)
F) A) and C)

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Darwin knew variations were transmitted through heredity, but he did not understand the mode of inheritance because


A) he didn't understand generational change over time.
B) he confined himself to laboratory work.
C) he was never really concerned with inheritance.
D) Mendal's genetic experiments weren't know to him.

E) B) and C)
F) A) and D)

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