The Discovery of DNA

Who is known as the Father of Genetics?

• Charles Darwin

• Gregor Mendel

• Albert Einstein

• Isaac Newton

What laws did Gregor Mendel formulate?

• Laws of Motion

• Laws of Thermodynamics

• Laws of Segregation and Independent Assortment

• Laws of Gravity

What theory did Walter Boveri and Theodore Sutton's research form the basis of?

• Theory of Evolution

• Germ Theory of Disease

• Chromosome Theory of Inheritance

• Cell Theory

Who studied the properties of nucleic acids in the early 1920s?

• James Watson

• Phoebus Levene

• Francis Crick

• Rosalind Franklin

What are the two types of nucleic acids identified by Phoebus Levene?

• A) DNA and RNA

• B) DNA and Protein

• C) RNA and Protein

• D) Protein and Lipid

What did Fred Griffith discover about dead pathogenic bacteria?

• They become harmless

• They can transform non-pathogenic bacteria into pathogens

• They have no effect on other bacteria

• They can only affect viruses

Fill in the blank: Fred Griffith called his discovery the ________ Principle.

• Transforming

• Transcribing

• Translating

• Transposing

Who investigated Griffith's Transforming Principle in 1944?

• James Watson and Francis Crick

• Colin MacLeod, Maclyn McCarty, and Oswald Avery

• Rosalind Franklin

• Gregor Mendel

What did Colin MacLeod, Maclyn McCarty, and Oswald Avery identify as the transforming agent responsible for Griffith's principle?

• Protein

• RNA

• DNA

• Lipids

What did Chargaff show about nucleotide composition?

• It varies from one species to the next.

• It remains constant between different species.

• It varies within the same species.

• It is identical in all living organisms.