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Discuss the role of chance in mutations, gene flow, and genetic drift.

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Chance plays a significant role in mutat...

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Mutations must occur in the body cells for them to have evolutionary significance.

A) True
B) False

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A particular animal has positive reproductive differential based on its


A) genotype
B) genetic endowment
C) total phenotype
D) sexual selection strategy

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

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If there are two and only two forms of a gene for a trait, each is called an allele.

A) True
B) False

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Ideas about evolution could not take root until


A) the Catholic church stopped insisting that God created perfect species
B) the mechanisms (mutations and selection) of evolution were understood
C) a long Earth existence was acknowledged
D) all of the above are correct

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

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The name of the genes that control the timing of certain events in a person's biological life is


A) timing genes
B) structural genes
C) regulatory genes
D) proteins

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

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Chromosomes are segments of DNA on genes that give instructions for traits.

A) True
B) False

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Watson and Crick discovered there were only four in DNA strands, no matter what the species.


A) bases
B) proteins
C) molecules
D) amino acid

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

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Darwin's thinking that resulted in his theory of natural selection included all of the following EXCEPT


A) knowledge that mutations were the ultimate source of variation
B) all species can produce more offspring than present resources can feed
C) variation exists among all species and is inherited
D) competition results from too many offspring for too few resources

E) All of the above
F) None of the above

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Women produce sex cells


A) twice as much during ovulation as between any two menstrual periods
B) less often than males but they are more fertile
C) and store them long before a baby is born
D) starting before they are teenagers, but the cells are not fully formed

E) None of the above
F) All of the above

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African baboons


A) form one species, but there is gene flow on the borders of all subspecies
B) form one genus and five species, with little or no interbreeding on their borders
C) form five distinct species that differ in many traits and never interbreed
D) are one single species so similar to each other that they can not be said to form subspecies

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

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All life is composed of the same amino acids, thus pointing at a common origin of all life.

A) True
B) False

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The geneticist Sewall Wright discovered that populations can change from one generation to the next just because they are small in size.

A) True
B) False

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What is the modern synthesis and why did it take two phases to produce?

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The modern synthesis, also known as the ...

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The three cornerstones to explain evolution are inheritance, natural selection, and mutations.

A) True
B) False

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