History of DNA

Who is responsible for producing this image?

• Francis Crick
• James Watson
• Rosalind Franklin
• Watson and Crick

How did Rosalind Franklin's photo 51 affect the work of Watson and Crick?

• It was used to determine the physical structure of DNA
• It was used to identify the four bases that make up DNA
• It was used to determine the theory of independent assortment
• It was used to show DNA was the molecule of inheritance

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What did Erwin Chargaff conclude from his experiments?

• Nitrogen bases are held together by peptide bonds
• A and T, C and G always occur in equal amounts
• Proteins are the carriers of genetic information
• C and G rarely occur in eukaryotic organisms

What was Watson and Crick's main scientific accomplishment?

• Building the first accurate model of DNA
• Isolating strains of pneumonia causing bacteria
• Determining base pairing rules
• Discovering the process of genetic transformation

From his work with mice and pneumonia-causing bacteria, Frederick Griffith discovered what?

• Replication
• Transcription
• Transformation
• Translation

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By using radioactive isotopes, Hershey and Chase were able to conclude that _____ is the carrier of genetic information.

• DNA
• Protein
• Carbohydrate
• Lipid

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NGSS.HS-LS3-1

Who proposed that DNA was not a protein?

• Oswald Avery

• James Watson

• Martha Chase

• Harry Styles

What were Alfred Hershey & Martha Chase responsible for?

• Proved that DNA carries genetic information

• Discovered the 4 nitrogen bases

• Founded Pokemon GO

• Discovered that DNA is made up of a double helix

What organism(s) did Frederick Griffith study? There may be 2!

• mice

• bacteriophage

• bacteria

Who discovered that bacteria could be changed by the process of transformation?

• Griffith

• Hershey & Chase

• Avery

• Franklin