Evolution Practice Multiple Choice 2018

1. Which of the following are examples of temporal isolation?
a. A horse and a donkey mate to reproduce a mule, but the mule is sterile
b. Two species are closely related to each other but one is only found in rivers and streams while
the other is only found in lakes.
c. Two closely related plant species are capable of interbreeding but one releases pollen in March
and the other in May
d. All of the above
e. b and c
2. What is true of evolution?
a. It is the change in inherited traits in a population over time.
b. It is a concept that includes natural selection, micro, and macroevolution
c. It can be measured as the change of allele frequencies of a population or a species
d. all of the above
e. A and c
3. What type of reproductive isolation mechanism is it when two different species have a hybrid offspring
that lives for a short time and then dies?
a. Zygote Mortality
b. Hybrid Infertility
c. Hybrid Inviability
d. Hybrid Unfunctional
e. none of the above
4. What is the definition of gene pool?
a. the movement of alleles from one population to another
b. the reservoir from which members of the next generation of that population get their genes
c. within a species, the proportion of gene copies in a given allele
d. the total collection of genes (alleles) in a population at any one time
e. b and d
5. Which of these is a post zygotic reproductive isolating mechanism?
a. ecological isolation
b. temporal isolation
c. zygote mortality
d. gamete isolation
e. none of the above
6. A volcanic eruption wipes out the majority of a population, and only a few members end up surviving
and reproducing. This is an example of:
a. natural selection
b. bottleneck effect
c. founder effect
d. allopatric speciation
e. behavioral isolation
7. Two species of frogs live with each other, but do not mate with each other. One of the species mates in
the spring, while the other mates in the summer. What term describes this scenario?
a. gamete isolation
natural selection
temporal isolation
all of the above
none of the above
8. What is natural selection?
a. humans breeding animals for their own purposes
b. When individuals survive a natural disaster
c. the most fit survive and breed
d. a member of a species that has a mutation
e. none of the above
9. Which of these evidence of evolution supports the theory of Natural Selection?
a. Fossils
b. Co Evolution
c. Structural Analogies
d. Vestigial Organs
e. B and C
10. Which one of these is a not a random evolution change
a. Natural Selection
b. Mutations
c. Genetic Drift
d. Bottleneck Effect
e. Founder Effect
11. What is the name of a mechanism where there is a movement of alleles from one population to
a. Founder's effect
b. Bottleneck Effect
c. Gene flow
d. Natural Selection
e. None of the above
12. What is allopatric speciation?
a. when a population of a species becomes geographically isolated
b. when a population becomes special at allocation
c. when speciation becomes allopatric
d. when the population of species evolves into separate species
e. I haven't done any work so I have no idea
13. The environment favours two distinctive traits. What is the selection pattern?
a. Stabilizing selection
b. Directional selection
c. Disruptive selection
d. A & B
e. A & C
14. Some flowers seeds flew to another island and established their population there. Which of the
following does this describe?
Natural selection
Bottleneck effect
Founder effect
Gene Flow
Temporary Migration
15. When the environment is relatively stable for a long time, natural selection usually follows what pattern
of selection?
a. Directional
b. Stabilizing
c. Disruptive
d. Somatic
e. Dispersive
16. The development of several highly adapted species from one less specialized species is a process
a. genetic drift
b. Hybridization
c. Polyploidy
d. adaptive radiation
e. Biogeography
17. Which of the following would be an example of convergent evolution?
a. Hummingbird bill sizes changing in shape to fit easily into flower.
b. Competition among finches of Galapagos Islands causing speciation.
c. Anteaters in Africa and South America both independently develop long, narrow skulls
d. Maples moving northward after glaciers started to recede in North America.
e. Two populations become physically isolated
18. How does natural selection affect the frequency of mutations?
a. Under conditions of high selection pressure, beneficial mutations occur more frequently
b. Natural selection does not affect the frequency of mutations
c. All mutations increase when selection pressure is high
d. When there is no selection pressure, mutations do not occur
e. Mutations occur less frequently when selection pressure is high
19. The bones of a human arm are homologous to structures in all of the following EXCEPT:
a. whale flipper
b. bat wing
c. butterfly wing
d. bird wing
e. frog forelimb
20. Which of the following will not maintain Hardy Weinberg equilibrium?
a. The population remains large
b. No mutation occurs
c. No migration occurs
d. natural selection occurs
e. Mating opportunities are equal
21. An example of a barrier for allopatric speciation would be:
a. Seas
b. mountain ranges
c. Rain
d. Weather
e. both a and b
22. Which of the following is the best definition of Darwin's theory of survival of the fittest?
a. Individuals that are fast are able to reproduce
b. Individuals that are the most fit to survive and reproduce
c. Individuals that live longest will get to reproduce
d. Individuals that are able to survive natural disasters are fit
e. None of the above
23. What is true of homologous features?
a. Must have the same function
b. Must have different functions
c. have a common origin
d. are of no use or function to an organism
e. Are due to convergent evolution
24. Adaptive Radiation is:
a. when populations of a species become geographically isolated
b. when a single species evolves into a number of distinct/closely related species
c. when gene flow is reduced
d. when the environment selects fit variants
e. When selection is based on phenotypes and is not random
25. Species that have greater # of chromosomes have the potential for increased genetic diversity. What
term is this:
a. Sympatric Speciation
b. Sexual Reproduction
c. Genetic Variation
d. Population Diversity
e. Gene flow
26. Which feature of the male peafowl is likely to have evolved from sexual selection?
a. long quills
b. a pointed beak
c. colourful feathers
d. long neck
e. sharp eyesight
27. Fireflies have unique lighting patterns. The frequency of lighting is species specific. Fireflies in the
same geographical will not mate with those having different lighting frequency. Which type of
reproductive isolating mechanism is this?
a. Behavioural Isolation
b. Ecological Isolation
c. Hybrid Infertility
d. Temporal Isolation
e. Zygote Mortality
28. When convergent evolution occurs the species have _______:
a. A recent common ancestors
b. Structures with different functions
c. Close ecological interactions
d. Structures with similar functions
e. A and D are true
29. What is the ultimate source of genetic variation?
a. genetic drift
b. gene flow
c. Mutation
d. Migration
e. founder effect
30. The frequency of White Rhinos with large horns in Zimbabwe has dropped significantly since humans
moved into their geographical area. Now there is a high frequency of White Rhinos with small horns;
what is the most likely cause of this?
a. selective breeding
b. natural selection
c. allopatric isolation
d. De-evolution
e. sexual selection
31. Which of the following works to change the gene pool of a population?
a. Gene flow
b. Genetic drift
c. Mutations
d. Migration
e. All of the above
32. Which of the following is more likely to contribute to gene flow between two populations?
a. Migration
b. Mating
c. Genetic Drift
d. Sexual Selection
e. Natural Selection
33. Homologous structures are those that show similarity in:
a. Appearance
b. Function, but homologous structures can also vary in function too.
c. Origin
d. Size
e. None of the above
34. When natural selection selects against one extreme in favour for another, it is called
Stabilizing Selection
Directional Selection
Natural Selection
Disruptive Selection
Equal Selection
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