DNA History

The work of Erwin Chargaff allowed Watson and Crick to determine the rules of.......

• protein synthesis

• transcription

• hydrogen bonding

• nitrogen base pairing

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NGSS.HS-LS1-1

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

• Griffith

• Hershey & Chase

• Avery

• Franklin

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

Who is responsible for producing this image?

• Erwin Chargaff

• Eugene Levine

• Rosalind Franklin

• Watson and Crick

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NGSS.HS-LS1-1

Who developed the general model of DNA that we use today?

• Rosiland Franklin

• Watson & Crick

• Eli Whitney

• Robert Oppenheimer

Who discovered the double helix structure of DNA?

• Watson and Crick

• Rosalind Franklin

• Gregor Mendel

• Erwin Chargaff

What technique did Rosalind Franklin use to help discover the structure of DNA?

• X-ray crystallography

• Electron microscopy

• Nuclear magnetic resonance

• Mass spectrometry

Which scientist's rules helped Watson and Crick determine the base pairing in DNA?

• Erwin Chargaff

• Linus Pauling

• Maurice Wilkins

• Frederick Sanger

What is the significance of the Hershey-Chase experiment in DNA history?

• It proved that DNA is the genetic material

• It discovered the double helix structure

• It identified the four bases of DNA

• It showed that DNA replication is semi-conservative

Which of the following is NOT a component of a DNA nucleotide?

• Phosphate group

• Ribose sugar

• Deoxyribose sugar

• Nitrogenous base