Selection in Sled Dogs

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BSSD STANDARDS:

SC 03/04.20 Understanding of how science explains changes in life forms over time, including genetics, heredity, and the process of natural selection.

SC 03/04.22 Understanding that all organisms are linked to each other and their physical environments through the transfer and transformation of matter and energy.

SC 5L.20, 6L.20, 7L.20 a. recognizing that all organisms have chromosomes made of DNA and that DNA determines traits.

Objectives:

Students will gain an understanding of the difference between natural and artificial selection.

Resources:

http://dsc.discovery.com/tv/iditarod/slide-show/iditarod-slide-show.html

http://esciencenews.com/articles/2008/09/25/lessons.iditarod

Dogs of the North: Alaska Geographic Volume 14, Number 1

SLED DOGS Arctic Athletes: Elizabeth Ring

BIOLOGY BOOK

Directions:

We will be using the resources above to learn about how sled dogs are different from other dogs and what makes them able to perform in a way that no other dogs can.

1.Define the following terms.

1.Artificial selection: __________________________________________________________

2.Natural selection: ___________________________________________________________

3.Adaptation: ________________________________________________________________

4.Mutation: _________________________________________________________________

5.What are the breeds of dogs that are used as sled dogs?


6.What are the adaptations that make these dogs best for dog sledding?



7.How did their environment naturally select for these traits?







8.How do mushers breed their dogs to artificially select for these traits?

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