Florida International University PCB 3063 Worksheet 10 19.3 Adaptive Evolution 1)Natural selection only acts on the population’s what? What is adaptive evolution? At what level does natural selection work and how? What is fitness? Why is relative fitness used instead of absolute fitness? What are the ways selection can affect population variation? What is stabilizing selection and how does this impact a population’s genetic variance? What is directional selection and how does this impact a population’s genetic variance? How was this demonstrated with the peppered moth? What is diversifying selection and how does this impact a population’s genetic variance? What is frequency-dependent selection and what is the outcome of negative or positive frequency-dependent selection? What is sexual selection? What is sexual dimorphism? How can sexual selection select for traits that are actually detrimental to the individual’s survival? What is the handicap principle? What is the ‘good genes’

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Florida International University PCB 3063 Worksheet 10 19

Biology May 03, 2021

Florida International University

PCB 3063

Worksheet 10

19.3 Adaptive Evolution

1)Natural selection only acts on the population’s what?

What is adaptive evolution?
At what level does natural selection work and how?
What is fitness?
Why is relative fitness used instead of absolute fitness?
What are the ways selection can affect population variation?
What is stabilizing selection and how does this impact a population’s genetic variance?
What is directional selection and how does this impact a population’s genetic variance?
How was this demonstrated with the peppered moth?
What is diversifying selection and how does this impact a population’s genetic variance?
What is frequency-dependent selection and what is the outcome of negative or positive frequency-dependent selection?
What is sexual selection?
What is sexual dimorphism?

How can sexual selection select for traits that are actually detrimental to the individual’s survival? What is the handicap principle?
What is the ‘good genes’ hypothesis?
Why doesn’t natural selection create the perfect organism?
What does it mean when we say “Evolution has no purpose”?

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