Thursday, April 3, 2014

Genetic Changes in Dogs and Cows

In this activity, you will read and watch videos about selective breeding of cows and dogs and discuss the pros and cons related to the manipulation of animal species.

Step 1: Read the Introduction about the pros and cons of selective breeding.

Step 2: Read the article- Dogs that Saved the World 

Step 3: Watch the video: Cattle Breeding Traits

Step 4: Answer the following questions about the video (on your worksheet).

  1. How many different breeds of cattle have humans created?
  2. Would the qualities that make good beef cattle help them survive in the wild
  3. Besides milk and meat production, what other traits might humans wish to breed in cattle?
Step 5: Watch the video: Cattle Breeds 
Step 6: Answer the following questions about the video (on your worksheet).

  1. What might indicate that a cattle breed is adapted to cold climates like Scotland?
  2. What do the different breed names refer to?
  3. Why might “adaptability” be a desirable trait in a specific breed?

Step 7:  Watch the following videos:  Dog Sense Delta, Sled Dogs, Moving Sheep

Step 8: Answer the following questions about the videos (on your worksheet).

  1.  How do humans change animals through artificial selection?
  2.  What are dogs natural traits that make them attractive to people?
  3.  What adaptations have sled dogs made to living in the arctic?
  4.  What traits have people artificially selected sheep dogs for?
  5.  What are physical and mental problems dog breeds may have?
Step 9:  Finish with a COMPLETE paragraph that starts with one of the following statements:


  1. It is a good thing that humans have artificially selected animals to serve their purposes.
  2. It is a bad thing that humans have artificially selected animals to serve their purposes.

Support your statement with 3 examples from what you have just seen or read.







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