Fish A and B have nearly identical DNA sequences. The DNA sequences in fish C are significantly different from those of fish A. Biologists may infer that

fish A and B are more closely related to each other than either is to fish C

fish C must have been the ancestor of both fish A and fish B

either fish A or fish B must be a direct ancestor of fish C

all three fish appeared on Earth at about the same time

Cytochrome c is a protein that is involved in cellular respiration in all eukaryotic organisms. Human cytochrome c contains 104 amino acids. The following table compares human cytochrome c with cytochrome c from a number of other organisms. Which of the following is not a valid inference from these data?

All of the proteins produced by chimpanzees and humans are identical

Dogs are more closely related to humans than chickens are

The cytochrome c of chimpanzees differs from that of rhesus monkeys by only one amino acid

Chimpanzees are more closely related to humans than yeasts are

What is the idea developed by Charles Lyell which states that the geologic processes that shaped Earth in the past continue to operate in the same way today?

inheritance of acquired characteristics

Natural selection acts

on phenotypes that are expressed

If a mutation introduces a new fur color in a rat population, which factor might determine whether the frequency of the new allele will increase?

whether the mutation makes some rats more fit for their environment than other rats

whether the mutation was caused by nature or by human intervention

how many phenotypes the population has

how many other alleles are present

Natural selection could not occur without

competition for unlimited resources

Gene flow describes the

movement of alleles into or out of a population due to migration

exchange of genes during recombination

movement of genes from one generation to the next

movement of genes within a population because of interbreeding

The bones labeled X can be referred to as ____ structures and provide evidence that organisms___:

homologous; share a common ancestor

fossil structures; must have lived at different times

sequential; evolved in response to each other

The species of finches that Darwin observed differed in the shape of their beaks. According to Darwin, all of these species probably

had descended from similar birds in Africa

Natural selection is the process by which

organisms with traits well suited to their environment survive and reproduce more successfully than organisms less suited to the same environment

acquired traits are passed on from one generation to the next

the age of selected fossils is calculated

geologic processes occurred in the past the same way they occur today

When Darwin published his first book about evolution, he included all of the following ideas except

the idea that species are permanent and unchanging

the idea that some organisms reproduce at a greater rate than others

the idea that species change slowly over time

the idea that some species become better suited to their environment than others

Although they often live in the same habitat, one species of animal breeds earlier in the spring than the other does. What can be inferred from this information?

The two species do not interbreed because of reproductive isolation

The two species interbreed throughout the spring season

One species will cause the extinction of the other

The two species do not interbreed because of geographic isolation

Speciation can occur as a result of geographic isolation because

members of a species can no longer find mates

populations that live in different environments may be exposed to different selection pressures

the biological concept of species defines individuals that do not interbreed as members of different species

The geographic isolation of two populations of a species tends to increase differences between their gene pools because it

prevents interbreeding between the populations

prevents interbreeding within each population

increases differences in courtship behavior

causes temporal isolation of the two populations

Each of the following is a condition necessary for natural selection to occur EXCEPT

more offspring are born than can survive

fitness varies among individuals

there is heritable variation among members of the population

The major idea that Darwin presented in his book The Origin of Species was that

species change over time by natural selection

animals change, but plants remain the same over time

species change over time and never compete with each other

species may change in small ways but cannot give rise to new species

Evidence that evolution occurs includes all of the following except

acquired characteristics and learned behaviors

similarities and differences in proteins and DNA sequences between organisms

homologous structures among different organisms

Populations of the same species living in different places

become increasingly different as each population becomes adapted to its own environment

always show balancing selection

are genetically identical to each other

What type of population is most susceptible to loss of genetic variability as a result of genetic drift?

populations that fluctuate in size

Which of the following describes a population?

cypress trees in New Orleans, Louisiana

six species of birds living in a forest

snakes and lizards living in the Mohave desert

daisies and carnations in a garden

Ch 15 & 16 Evolution and Population Genetics

Authored by Lori Roque

Biology

9th - 12th Grade

NGSS covered

Used 32+ times

Ch 15 & 16 Evolution and Population Genetics

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The separation of populations by barriers such as rivers, mountains, or bodies of water is called

temporal isolation

geographic isolation

behavioral isolation

genetic equilibrium

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The number of individuals with a particular phenotype divided by the total number of individuals in the population is the

genotype frequency

phenotype frequency

allele frequency

Hardy-Weinberg equilibrium

The large, brightly colored tail feathers of the male peacock are valuable to him because

they attract potential predators

they warn off potential competitors for mates

they attract potential mates

they attract people who provide them with food

Species 1 and 2 have very different genes. Species 7 and 8 have only a few different genes. What is most likely true about these species?

Species 1 and 2 are more closely related to each other than species 7 and 8 are to each other

Species 1 is the ancestor of species 7 and species 2 is the ancestor of species 8

Species 7 and 8 are more closely related to each other than species 1 and 2 are to each other

All four of these species are probably equally related to each other

When a dairy farmer chooses to breed the cows that give the most milk in the herd, the farmers are following the principle of

acquired characteristics

artificial selection

natural selection

descent with modification

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Reproductive isolation differs from geographic isolation in that

reproductive isolation only occurs after fertilization, whereas geographic isolation occurs before fertilization

geographic isolation never leads to speciation, whereas reproductive isolation sometimes does

members of two species in which reproductive isolation occurs never try to interbreed, whereas geographically isolated ones do

members of the same species are not physically separated in reproductive isolation, whereas they are separated in geographic isolation

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements defines the members of a species?

They are temporally isolated from each other

They have identical genes

They mate and produce offspring

They are geographically isolated from each other

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Ch 15 & 16 Evolution and Population Genetics

The separation of populations by barriers such as rivers, mountains, or bodies of water is called

The number of individuals with a particular phenotype divided by the total number of individuals in the population is the

The large, brightly colored tail feathers of the male peacock are valuable to him because

Species 1 and 2 have very different genes. Species 7 and 8 have only a few different genes. What is most likely true about these species?

When a dairy farmer chooses to breed the cows that give the most milk in the herd, the farmers are following the principle of

Reproductive isolation differs from geographic isolation in that

Which of the following statements defines the members of a species?

Which of the following are examples of fossils?

When there are only a few surviving individuals of a species, the species is vulnerable to extinction because there is little if any _______ on which natural selection can act

If two populations have been reproductively isolated and can no longer breed and produce fertile offspring, the process of ______ has occurred

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