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Evolution: Evolutionary Arms RaceVideo Questions

Newts Snakes and Co evolution

  1. What is co-evolution?
  2. Why has the rough skinned newt developed a level of toxicity much higher than that necessary to kill mostpredators. The newt might may be the most toxic animal on the planet?
  1. What is the selective pressure on the newt?
  1. What is the tradeofffor the snake in developing greater resistance to toxicity?

Microscopic Predators

  1. Since the dawn of civilization, what is human’s only predator?
  2. What do humans use as a defense against these predators?

The Tuberculosis Epidemic

  1. What additional reason do the people of Russia now have to discourage them from breaking the law and being sent to prison?
  1. How does the TB bacterium spread? Work to kill?
  1. Sasha’s contracted tuberculosis during his first prison term and prescribed medicine to treat the disease. When he was released he stopped getting treatment. What happened when he stopped the treatment?
  2. Why can’t the same drugs work?
  1. Why is the Russian prison system described as an “ideal incubator” for drug-resistant strains of bacteria?
  1. The doctor Alex Goldfarb is using what approach to treat TB?
  1. What are “second-line” drugs? Why are they necessary?
  2. How will multi-drug resistant TB come to America?
  3. How is genetic analysis being used to track the progress of TB?
  1. How have we increased the evolution of drug resistant microbes?
  1. Why is multi-drug resistance referred to as a “man-made problem?”

Domesticating Germs

  1. How might evolutionary processes be used to reverse the problem of drug-resistantmicrobes?
  1. Regarding communicable diseases, what is the relationship between mild toxicity and proximity?
  1. What factors favor increased harmfulness or decrease harmfulness?

Survival of the Wild Cats

  1. What do cats and humans have in common in terms of immunodeficiency virus.
  1. Why are some cats and people less susceptible to immunodeficiency virus?
  1. What is the relationship between bubonic plague and HIV?

Symbiosis and Leaf Cutter Ants

What does mutualistic symbiosis mean? Give an example.

Good Germs

Describe the relation between allergies and asthma among children of farmers and nonfarmers.

AFTER THE VIDEO CLIP

Describe how natural selection has lead to an increase in the number of antibiotic resistant bacteria. (Use back)