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Week 2: Genetic Drift/ Inbreeding and Population/quantitative genetics

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Chapter 2 in reading Lectures from 1/17 and 1/19
Sara Penka
Quiz by Sara Penka, updated more than 1 year ago
Sara Penka
Created by Sara Penka over 7 years ago
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Resource summary

Question 1

Question
What type of selection is graph one?
Image:
e217e0f9-ccb3-4d65-b433-e9fb5053cc31 (image/jpeg)
Answer
  • Directional
  • Stabilizing
  • Disruptive

Question 2

Question
What type of selection is graph 2?
Image:
18ecd36e-c19b-499b-bba2-7ff309c5beb7 (image/jpeg)
Answer
  • Stabilizing
  • directional
  • disruptive

Question 3

Question
What type of selection is the last graph?
Image:
7710f0ec-1124-428f-98fc-9f2e9887a3f7 (image/jpeg)
Answer
  • stabilizing
  • disruptive
  • directional

Question 4

Question
Antibiotic resistance is an example of directional selection
Answer
  • True
  • False

Question 5

Question
Stabilizing selection _______________ the mean trait value and reduces variation in the trait.
Answer
  • increases
  • maintains
  • reduces

Question 6

Question
[blank_start]Stabilizing[blank_end] selection maintains the meant trait value and [blank_start]reduces[blank_end] the variation in the trait.
Answer
  • Stabilizing
  • reduces

Question 7

Question
Disruptive selection occurs when the tails of the distribution are not favored over the intermediate phenotypes.
Answer
  • True
  • False

Question 8

Question
What type of selection is this?
Image:
eb4c77d7-5fc0-488d-ac18-99604c26f4ef (image/jpeg)
Answer
  • directional

Question 9

Question
Genetic drift, gene flow, and mutation pressures are other ways in which evolution may occur.
Answer
  • True
  • False

Question 10

Question
Genetic drift, gene flow, and mutation pressures only enhance selection.
Answer
  • True
  • False

Question 11

Question
Genetic drift isn't Darwinian evolution, correct?
Answer
  • correct
  • incorrect

Question 12

Question
A fixed allele, with a frequency of 1, is the only allele in that population.
Answer
  • True
  • False

Question 13

Question
Label the Y axis
Image:
6b7a6551-0567-4fca-8608-c6976e74cdf3 (image/jpeg)
Answer
  • fitness
  • mean fitness
  • mean allele frequency

Question 14

Question
Why type of evolution can get a population from point X to point Y?
Image:
5e417525-6d60-48fa-b3a7-a9e17cca5d32 (image/jpeg)
Answer
  • natural selection
  • genetic drift

Question 15

Question
Immigration is always good.
Answer
  • True
  • False

Question 16

Question
Horizontal gene transfer is when genes from one species are introduced into another organism compared to vertical (parent to offspring) transmission.
Answer
  • True
  • False

Question 17

Question
Horizontal gene transfer....
Answer
  • allows for rapid acquisition of traits
  • more common among eukarya
  • more common among bacteria
  • slows down the acquisition of traits

Question 18

Question
Modern [blank_start]Synthesis[blank_end] demonstrated that [blank_start]natural[blank_end] selection operating on Mendelian variation could lead to rates of evolutionary changes that explain historical patterns of evolution.
Answer
  • Synthesis
  • natural

Question 19

Question
What equation allows evolution to be documented and qualified? [blank_start]HW[blank_end]
Answer
  • HW

Question 20

Question
Hardy-Weinberg Theroem serves as a null hypothesis for whether evolution is occurring in a population. It assumes...
Answer
  • small population
  • large population
  • random mating
  • every genotype has the same probability of mating
  • immigration
  • no immigration
  • emigration
  • no emigration
  • equal fitness
  • mutations

Question 21

Question
HW assumptions are important because any [blank_start]violation[blank_end] is a way that [blank_start]evolution[blank_end] can occur.
Answer
  • violation
  • evolution

Question 22

Question
If a difference of frequency is found between the actual and expected alleles/genotypes, then evolution has occurred/
Answer
  • True
  • False

Question 23

Question
You should practice the math questions at the end of this powerpoint.
Answer
  • True
  • False
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