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Discovering Genes Associated with Diseases and Traits in Dogs
Conditional Remix & Share Permitted
CC BY-NC-SA
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In this video module, students learn how scientists use genetic information from dogs to find out which gene (out of all 20,000 dog genes) is associated with any specific trait or disease of interest. This method involves comparing hundreds of dogs with the trait to hundreds of dogs not displaying the trait, and examining which position on the dog DNA is correlated with the trait (i.e. has one DNA sequence in dogs with the trait but another DNA sequence in dogs not displaying the trait). Students will also learn something about the history of dog breeds and how this history helps us find genes.

Subject:
Biology
Genetics
Life Science
Zoology
Material Type:
Lecture
Provider:
MIT
Provider Set:
MIT Blossoms
Author:
Elinor Karlsson
Date Added:
06/02/2015
CreatureCast – Doliolids
Conditional Remix & Share Permitted
CC BY-NC-SA
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Robert Sandler tells the story of doliolid reproduction. The video was made with paper puppets and hand-drawn animations. Robert made this episode with support from the Society of Royce Fellows.

Subject:
Biology
Life Science
Zoology
Material Type:
Lecture
Provider:
Dunn Lab at Brown University
Provider Set:
CreatureCast
Author:
Robert Sandler
Date Added:
09/08/2012
CreatureCast - Mating When You are Stuck to a Rock
Unrestricted Use
CC BY
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If you are stuck to a rock it is tricky to get close enough to a partner to mate. One solution to this problem would be to release eggs or sperm into the open water, which is what many animals in this situation do. Acorn barnacles (Semibalanus balanoides), however, found a different solution. They have evolved the longest penis relative to their body size of any animal. In this video the penises of several barnacles are probing the neighborhood for mates. The penis is re-grown each mating season.

Subject:
Biology
Life Science
Zoology
Material Type:
Lecture
Reading
Provider:
Dunn Lab at Brown University
Provider Set:
CreatureCast
Date Added:
11/06/2009
Signs and Tracks of Animals
Conditional Remix & Share Permitted
CC BY-NC-SA
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Students will examine clues about animals such as nests, leaves, feathers, fur, tracks that allow some conclusions about the identity, physical characteristics or behavior of the animals. Students will study the characteristics of animal tracks.

Subject:
Life Science
Zoology
Material Type:
Activity/Lab
Lesson Plan
Provider:
Science Education Resource Center (SERC) at Carleton College
Provider Set:
Pedagogy in Action
Author:
Susanne Grimm
Date Added:
10/04/2011