Cal State LA Fall/Spring 24/25

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November 16 :: Forensic Science :: DNA and Chromatography

Cal State LA Fall/Spring 24/25 November 16 :: Forensic Science :: DNA and Chromatography

What is DNA?

Watch the video below to learn how to extract DNA from Strawberries

Scan the below QR code and post pictures of your DNA extraction on the Padlet.

Made with Padlet

Discussion:
Watch the below video and discuss the use of Forensic DNA Phenotyping and litter in Hong Kong.

Want to learn more about Forensic DNA Phenotyping? Check out the linked pdf and video Making Sense of Forensic Genetics. What Can DNA Tell You About Crime?

and video

 

Paper Chromatography

Instructions (Part I): Follow the method demonstrated in the video below to analyze the ink from each suspect’s pen. Use a wooden stirring stick instead of a pencil. Make sure the filter paper touches the water, but the ink mark remains above the water level. Allow the paper chromatography analysis to run for 5 minutes.

Instructions (Part II): Carefully remove each piece of filter paper and label them “Suspect 1”, “Suspect 2”, and “Suspect 3” using your pencil. Place all the filter papers side by side and take a clear photo. 

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