Download Exam Review 5 - Iowa State University

Exam Review 5:
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Raelyn
Biology 211 (3)
Dr. Biederman
April 8, 2015
1. This occurs when a few individuals become isolated from a larger population,
establishing a new population whose gene pool differs from the original population.
a. Bottleneck effect
b. Founder effect
c. Maternal effect
d. Translocation
2. Who hypothesized that species evolve through use and disuse and through the inheritance
of acquired traits?
a. Charles Darwin
b. Carolus Linnaeus
c. Jean-Baptiste de Lamark
d. Alfred Wallace
3. Which of the following is a postzygotic isolating mechanism?
a. Hybrid sterility
b. Habitat isolation
c. Gametic isolation
d. Behavioral isolation
4. Genetic drift has a major impact on _______.
a. Small populations
b. Large populations
5. Which person(s) advocated Uniformitarianism?
a. John Ray
b. Carolus Linnaeus
c. Jean-Baptiste de Lamark
d. James Hutton/Charles Lyell
6. Prevents the interspecies hybrid zygote from developing into a viable, fertile offspring.
a. Prezygotic isolating mechanism
b. Postzygotic isolating mechanism
7. What is the smallest unit that can evolve?
a. Individual
b. Population
c. Species
8. Individuals with characteristics that best match their environment leave more offspring is
related to which concept?
a. Natural selection
b. Decent with modification
c. Use and disuse
d. Artificial selection
9. Which of the following statements is false about genetic drift?
a. Genetic drift is one cause of microevolution
b. Genetic drift is the random change in allele frequencies in a population
c. Genetic drift has a stronger affect on really small populations
d. Genetic drift can predict allelic frequencies of each generation
e. All statements are false
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10. All of the alleles for every gene in a given population is called _____?
a. Species
b. Gene pool
c. Locus
d. Hybrid zone
11. Which person viewed life as descent with modification?
a. Charles Darwin
b. Carolus Linnaeus
c. Georges Cuvier
d. Alfred Wallace
12. In human population, Hardy-Weinberg equilibrium is achieved _____.
a. In small, ethnic communities
b. In populations with large influxes of immigrants
c. In large communities with random mating
d. In communities that were founded by small numbers of people
13. Prezygotic isolating mechanisms _____.
a. Impede members of different species from attempting to mate
b. Prevent the hybrid zygote from developing into a viable, fertile adult
c. Increase the probability of fertilization if mating is completed successfully
d. Increase the number of successfully completed mating between member of
different species
14. Which of the following is a true statement about Charles Darwin?
a. He was the first to conclude that living organisms evolve
b. He proposed natural selection as the mechanism of evolution
c. He advocated catastrophism as an explanation for the fossil record
d. He based his theory of evolution on the inheritance of acquired traits
15. The first step in allopatric speciation is ____.
a. Mutation
b. Geographic isolation
c. Polyploidy
d. Genetic drift
16. Mutations lead to ______________ genetic variation
a. Increase
b. Decrease
17. ______________isolation is where the egg and sperm of a species are biochemically
incompatible
a. Gametic
b. Temporal
c. Behavioral
d. Habitat
18. How bones present in the forelimbs of mammals are similar supports __________.
a. Anatomical homology
b. Molecular homology
c. Embryological homologies
19. Natural selection is not random
a. True
b. False
20. If most of the population is killed, some genetic variability is lost, what is likely to occur?
a. Bottleneck effect
b. Founder effect
c. Maternal effect
d. Translocation
21. _______________ reduces the amount of variation in a trait
a. Directional selection
b. Stabilizing selection
c. Disruptive selection
22. Natural selection operates at the level of the _____________ whereas evolution occurs at
the level of the ______________.
a. Population, individual
b. Gene, population
c. Individual, population
d. Individual, gene
23. Populations diverge genetically, is what step in creating a new species?
a. Step 1
b. Step 2
c. Step 3
24. Which of the following is not a process that can change allele frequency?
a. Natural selection
b. Genetic drift
c. Gene flow
d. Mutation
e. All of the above
25. _____________isolation is an example of a prezygotic barrier where two species of trout
breed at different seasons.
a. Gametic
b. Temporal
c. Behavioral
d. Habitat
26. A vestigial trait in humans could possibly include:
a. Big toes
b. Small intestine
c. Appendix
d. Gaul bladder
27. Reproductive isolation evolves is what step in creating a new species?
a. Step 1
b. Step 2
c. Step 3
28. The formation of a new species within the same geographic space is called:
a. Allopatric speciation
b. Historical speciation
c. Sympatric speciation
d. Natural speciation
29. Gene flow between two populations is interrupted is what step in creating a new species?
a. Step 1
b. Step 2
c. Step 3
30. T/F Natural selection is not a main cause of microevolution
a. True
b. False
31. ___________ is the accumulation of heritable changes within a lineage
a. Cladogenesis
b. Use and Disuse
c. Anagensis
d. Classification system
32. _______________ changes the average value of a trait
a. Direction selection
b. Stabilizing selection
c. Disruptive selection
33. __________isolation is where species rarely encounter because they live in different
environments within a geographic area
a. Gametic
b. Temporal
c. Behavioral
d. Habitat
34. Which of the following is false about common ancestry?
a. Similarity as a result of sharing a common ancestor
b. Apart of Darwin’s natural selection theory
c. All living things share some fundamental traits
d. All life has a single origin
35. Selective breeding for a desired trait describes:
a. Natural selection
b. Decent with modification
c. Artificial selection
d. Use and disuse
36. ___________ is when there is a branching in evolution where the gene pool is split and a
new species arises
a. Cladogenesis
b. Use and Disuse
c. Anagensis
d. Classification system
37. Migration tends to _____ difference in allele frequency between populations while _____
genetic diversity within population.
a. Decrease, increase
b. Increase, increase
c. Decrease, decrease
d. Increase, decrease
38. _________ isolation can be described as a courtship ritual or behaviors to attract mates.
a. Gametic
b. Temporal
c. Behavioral
d. Habitat
39. Which of the following scientists developed a theory of evolution that was very similar to
Chalres Darwin?
a. James Hutton
b. Alfred Wallace
c. Georges Cuvier
d. Jean-Baptiste de Lamarck
40. According to the biological species concept, two organisms are considered to be
different species if they _____.
a. Look different
b. Live in different habitats
c. Are members of different populations
d. Cannot mate and produce viable, fertile offspring
41. T/F The Hardy-Weinberg equation helps researchers look at changes in allele frequency.
a. True
b. False
42. In the Hardy-Weinberg equation, 2pq refers to the frequency
a. Of individual that are homozygous for one of the alleles
b. Of individual that are heterozygous
c. Of all the alleles in the population
d. Of all the genotypes in the population
43. The Hardy-Weinberg equation is represented by:
a. 1=p^3+2pq+q^3
b. 1=p^2+pq^2+q^2
c. 1=p^2+2pq+q^2
44. Which of the following might be occurring if a population is not in Hardy-Weinberg
equilibrium?
a. Natural selection
b. Random mating
c. No migration
d. No mutation
45. In frogs, a gene controls the eye color, such that B=Brown and b=blue. On an island,
there were 36 brown-eyed frogs and 64 blue-eyed frogs. What is the value of q for this
population?
a. 0.80
b. 0.11
c. 0.64
d. 0.60
46. A population of rabbits may be brown or white. Brown rabbits have the genotype BB or
Bb. White rabbits have the genotype bb. The frequency of the BB genotype is 0.35. What
is the frequency b in this equation?
a. 0.35
b. 0.59
c. 0.41
d. 0.17
47. A hypothetical population of 10,000 humans has 6,840 individuals have dominant BB
brown eyes, 2,860 individuals with Bb brown eyes, and 300 with blue eyes. What is
genotype frequency for BB in this equation?
a. 0.03
b. 0.68
c. 0.29
d. 0.17