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iwaldron's picture

August, 2011 Revision

The Teacher Preparation Notes now include instructions for making model chromosomes from swim noodles or socks.  Sockosomes look like metaphase chromosomes in a karyotype and they are small enough for easy classroom use and storage, but they are relatively time-consuming to make.  Chromonoodles are relatively easy to make, but they are larger (up to 8" long).  If you want to make Chromonoodles, we recommend purchasing the needed swim noodles now during the summer swim season.  We have also made modest improvements in some of the questions in the Student Handout.  Also, a key is  now available upon request to


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