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Chapter 11 Study Guide
Chapter 11 Study Guide
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Study guide for biology Ch 11-12
Flashcards
35 cards
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Questions
35
Answers
1
Increases genetic variation when animals move from one population to another.
genetic drift
gene flow
bottleneck effect
sexual selection
2
Radiometric dating is an example of:
permineralization
relative dating
natural casts
absolute dating
3
The total and permanent disappearance of a species from Earth
radiation
coevolution
extinction
equillibrium
4
Remains of organisms that are known to have lived during a certain time.
index fossils
isotopes
geologic time scale
invertebrates
5
Evolution over many years produces
differences between species and their ancestors
species more likely to become extinct
species that are more similar
decreasing numbers of species
6
Which process is random?
adaptive radiation
mutation
natural selection
divergent evolution
7
Two sources of genetic variation are:
recombination and reproduction
mutations & extinctions
mutations and recombination
recombination & extinction
8
The movement of alleles from one population to another:
microevolution
gene flow
genetic drift
founder effect
9
The measure of how commonly a particular allele occurs in a population.
mutation rate
gene pool
allele frequency
phenotype
10
The species that live on the Galapagos Islands ______________.
are becoming more like each other
have lived unchanged
had common ancestors but have become increasingly different
change in response to other species
11
Two bird populations are isolated because of courtship dance rituals.
temporal isolation
behavioral isolation
sexual isolation
geographic isolation
12
The more genetic variation in a population, the more likely its individuals will:
survive
evolve
migrate
mutate
13
Fighting between male elephant seals over females is:
intrasexual selection
bottleneck effect
intersexual selection
founder effect
14
The combined alleles of all individuals in a population
phenotype
allele frequency
gene pool
mutation
15
The diversification of one ancestral species into many descendent species.
divergent evolution
adaptive radiation
puntuated equilibrium
coevolution
16
Some species live in similar environments and look very similar, but are not closely related.
temporal isolation
convergent evolution
sexual selection
divergent evolution
17
Biodiversity on Earth indicates that its organisms
can eat Krispy Kremes or Dunkin doughnuts
cannot tolerate extreme environments
have never changed
are adapted to live in a variety of environments
18
An example of a population is:
all insects species living in a rain forest
flowering plants and ferns in a garden
a species of alligators living in a swamp
all cats in North and South America
19
Why do only a tiny percentage of living things that ever existed become fossils?
Genetic drift
Less species diversity
Specific environmental conditions are required
Mass extinctions
20
One theory explaining evolution is based on:
homeostasis
natural selection
sexual reproduction
species diversity
21
Organisms of the same species are capable of:
evolving similar adaptations
producing fertile offspring
inhabiting similar habitats
having similar life expectancies
22
Genetic variation can occur through random changes in the DNA of a gene.
allele
gene flow
mutation
gene pool
23
Sources of genetic variation are:
social behaviors
asexual reproduction
environmental pressures
crossing over during meiosis
24
When a few individuals start a new colony it may result in:
more variation
mutation
the founder effect
the bottleneck effect
25
Two lizard populations are separated by channel caused by an earthquake.
disruptive isolation
temporal isolation
behavioral isolation
geographic isolation
26
Varieties of oak tree produce pollen during different seasons.
behavioral isolation
geographic isolation
gene flow
temporal isolation
27
Speciation
combining of two or more species
isolation that affects mating behavior
timing of mating that prevents sexual selection
divergence of two or more species from an existing one
28
The crossing of two different species that share common genes.
recombination
reproduction
mutations
hybridization
29
A problem with the bottleneck effect is:
genetic variation is lost
chance no longer affects them
alleles can't become fixed
offspring inherit harmful alleles
30
_________________ estimates the time during which an organism lived by comparing rock layers.
relative dating
trace fossils
half-life
Isotopes
31
A small number of birds find an island and colonize it. Genetic drift occurs through:
mutations
the bottleneck effect
the founder effect
sexual selection
32
The normal shuffling of alleles during meiosis results in:
reproduction
hybridization
mutations
recombination
33
A bumblebee opens a snapdragon flower which allows it to be pollinated. This exemplifies:
coevolution
divergent evolution
convergent evolution
equilibrium
34
Coevolution
species evolve in response to each other
species become extinct
species become increasingly different
Species evolve similar characteristics
35
Chance changes in allele frequencies within a population.
sexual selection
gene flow
gene pool
genetic drift
