1.
Which phrjlse best describes genetic drift?
A. individuals in a population
7.
selecting mates
A. positive and negative consequences.
B. a change in allele frequencies due to two different
interbreeding
B. only positive consequences.
populations
C. random change in genetic variation
C. only negative consequences.
D. effects of the environment
D. no changes to the population.
selecting certain
individuals to survive
E. introduction
2.
Environmental influences create selective
pressure, and result in
E. mass extinctions every time.
of new alleles into a population
8.
fJJ!J What
9.
List two examples of selective forces that can affect
a population.
Which is a result of inbreeding?
is the most significant factor in the
formation of a new species?
A. decrease in the frequency of homozygous genotypes
B. decrease in the frequency of heterozygous genotypes
C. increase in the frequency of homozygous genotypes
D. increase in the frequency of heterozygous genotypes
E. no change in the distribution of alleles
3.
fJJ!J Which
favours the phenotypes
over the other?
at one extreme
A. natural selection
B. directional selection
C. disruptive selection
D. diversifying selection
E. stablilizing selection
4.
11.
Two species of North American garter snakes live
in the same general region but in different habitats.
What type of isolating mechanism is occurring in
this case?
A. gametic
B. mechanical
C. behavioural
D. habitat
E. temporal
s. fJJ!J What
is true about polyploid crop plants?
A. They tend to be smaller.
B. They have greater species diversity.
C. They have only haploid gametes.
D. They have fewer chromosomes.
E. They can reproduce asexually.
6.
10. fJJ!J What are the two types of reproductive isolating
mechanisms that prevent gene flow between populations?
Which statement best describes Darwin's view
of evolutionary change?
A. a series of steps interrupted by periods of divergence
B. a series of steps that lead to equilibrium
C. slow and steady, before and after a divergence
D. several rapidly changing steps, occurring after
a divergence
E. gradual change followed by a natural disaster
D Identify the type of natural selection
represented by each graph. Summarize what is
occurring in each one.
12.
D Draw
'4.
mWhat
a series of diagrams to illustrate how a diploid parent cell could
produce a tetraploid offspring.
effects on speciation can occur when habitats are changed by
human activities?
Self Study Guide
SG-133
8
SG-132
2
SG-133
9
SG-135
3
SG-135
10
SG-136,SG-137
4
SG-136
11
SG-135
5
SG-137
12
SG-137
6
SG-135
13
SG-139
7
SG-135
14
SG-140
;.t--
1. Which of the following is an example of a
behavioural adaptation?
6. In which period did mammals first appear?
A. Cambrian
B. Mesozoic
A. camouflage colouring of the stick insect
C. Triassic
D. Tertiary
B. needle-sharp
E. Jurassic
talons of an owl
C. compound
eye of the honey bee
D. hibernation
of ground squirrels
7. What type of structures are the forearms of mammals?
E. mimicry of other species by viceroy butterfly
2. Between 1848 and 1898, the population of black moths
near Manchester England rose from two percent
to ninety-five percent. What lead to this change
in population?
A. behaviour of moths
B. introduction
of predators
C. changing environmental
B. homologous
C. ohnologs
D. analogous
E. polygenetic
8. Which of the following is a vestigial structure found
in humans?
A. vermiform appendix
B. pancreas
C. pelvic bone
D. gall bladder
E. calcaneus
conditions
9. What is the main effect of gene flow?
D. behaviour, genetic make-up and introduction
A. an increase in resistance to disease
of predators
B. a decrease in diversity
E. behaviour, genetic make-up and
environmental
A. vestigial
C. more homozygous individuals
factors
D. a change in allele frequencies
3. What must exist for natural selection to occur?
A. changing environmental
E. an increased chance of extinction
conditions.
10. Which phenotypes
B. migration of new members into population.
C. diversity within a species.
A. both extremes
D. increase in genetic mutations.
C. intermediate
E. competition for resources.
E.none
A. gradualism
A. limited gene pool in the F1 generation.
c. few predatorsin
changes.
12. Two populations live in the same geographic area and
become reproductively isolated. What has occurred?
D. high level of fitness.
E. high metabolic rate.
that explains how
A. floods and volcanic eruptions lead to repopulating
an area.
B. new species appear in the upper stratum of
fossil sites.
C. parents pass on learned adaptations to
the environment.
D. similar structural elements and origin can have
a different function.
E. new species arise from ancestral species in response
to the local environment.
C. founder effect
B. genetic drift
D. microevolution
E. macroevolution
the environment.
5. Natural selection is the mechanism
B. one extreme
D. all
11. Which term describes the formation of a new species?
4. An organism with many viable offspring has a
B. ability to quickly respond to environmental
does directional selection favour?
A. sympatic speciation
B. convergent evolution
C. punctuated
D. allopatic speciation
equilibrium
E. directional selection
13. The speciation of Darwin's finches is an example of
what phenomenon?
A. pre-zygotic isolating mechanisn'1
B. non-random
mating
C. adaptive radiation
D. sexual selection
E. convergent evolution
15. What theory suggests that geological processes operate at the same rates today
as they did in the past?
17. What type of natural selection is at work in each situation?
a. Trees in a windy area tend to remain the same size each year.
c. The same species of moths tends to have blue stripes in opens areas and
orange stripes in forested areas.
19. How does the study of biogeography
observations. Give an example.
support Darwin's and Wallace's
20. Many great thinkers supported Darwin's observations and lead to Darwin's
formulation of the theory of evolution by natural selection. Complete the
following chart.
23. Create a concept map to illustrate isolating mechanisms that can prevent gene
flow between populations.
SG-106
13
SG-139
2
SG-1 08, SG-11 0
14
SG-108
3
SG-110
15
SG-120
4
SG-108
16
SG-132
5
SG-110
17
SG-135
6
SG-123
18
SG-11 0, SG-120
7
SG-123,SG-125
19
SG-123
8
SG-125
20
SG-120
9
SG-132
21
SG-132
10
SG-135
22
SG-136,SG-139
11
SG-136
23
SG-136, SG- 140
12
SG-136