Please watch this YouTube video for instructions on today’s lesson:

Today we’ll begin our long journey through the wide world of DNA. As we begin to look forward to a fun filled few weeks, its at this point that we look back into the past and discuss the important people who’s contributions and life’s work answered some of life’s biggest questions.

If you are using Puffin: Go to http://www.DNAi.org and click timeline, there you will a see a list of scientists broken up by decade. Use the web quest to determine which scientists to look up. You can read their biographies by clicking their picture. You can also have them tell you their story by clicking the animated icons above them.

If you are not using Puffin: Below are links to videos that are taken from the website DNAi.org (provided you are using a computer with flash or the Puffin App). Use them to complete the introduction to these scientists as a part of this webquest (PDF).

• Friedrich Meischer – Bio – YouTube –

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• Erwin Chargaff – Bio – YouTube –

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• Rosalind Franklin – Bio – YouTube –

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• Alfred Hershey & Martha Chase – Bio – YouTube –

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• James Watson & Francis Crick – Bio – YouTube –

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Together the contributions come together to fit like pieces of a puzzle (Read Here) and the shape of the DNA molecule was finally uncovered.