devil of a disease case study slides
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Devil of a Disease Case Study Slides
2012
Goals for the Day1.Put the ideas of the theory of
Evolution by Natural selection to work.
2.Be able to write a testable hypothesis & experiment to go along with it.
3.Understand the importance of genetic variability
Question of the DayWhat needs to be present in a population for evolution by natural selection to occur?
Hint: We talked about ways we increase & decrease this
Case Study:Devil of a Disease
Devil of a DiseasePart I
Devil of a DiseasePart I
Immune SystemSelf vs. Non-self
Goals for the Day1.Be able to evaluate possible
consequences of different conservation actions for species.
2.Put the ideas of the theory of Evolution by Natural selection to work.
3.Understand and be able to describe the importance of genetic variability
Question of the DayIf natural selection needs variation to act on, what is the problem with genetically similar individuals.
Genetic DiversityGenetic Drift – changes in the
frequency of a gene in a population due not to mutation or natural selection, but due to chance.
Founder effect – small numbers of individuals are isolated from a larger population
Genetic DiversityPopulation/Genetic Bottleneckan evolutionary event in
which a significant percentage of a population or species is killed or otherwise prevented from reproducing, and the population is reduced by 50% or more, often by several orders of magnitude.
Genetic DiversityPopulation/Genetic BottleneckPopulation bottlenecks
increase genetic drift, due to reduction in population size.
They also increase inbreeding due to the reduced pool of possible mates
Case Study:Devil of a Disease
Part III Proposals1. Genetic Engineering2. Separate devils with tumors3. Find a cure4. Breed healthy or sick individuals in
captivity5. Semi-wild fenced off enclosures for
populations6. Kills devils with tumors
Part III Proposals1. Genetic Engineering
Pros Cons
Part III Proposals2. Separate devils with tumors
Pros Cons
Part III Proposals3. Find a cure
Pros Cons
Part III Proposals4. Breed healthy or sick individuals in captivity
Pros Cons
Part III Proposals5. Semi-wild fenced off enclosures for populations
Pros Cons
Part III Proposals6. Kill devils with tumors
Pros Cons
You are the manager! Write a ½ page
explanation of which strategy or combination of
strategies you would employ and why.
1. Genetic Engineering
2. Separate devils with tumors
3. Find a cure
4. Breed healthy or sick individuals in captivity
5. Semi-wild fenced off enclosures for populations
6. Kills devils with tumors
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