Exploring DNA and Genetic Discoveries of the 21st Century

Who is known for the foundational experiments on heredity using pea plants?

• Barbara McClintock

• Thomas Hunt Morgan

• Gregor Mendel

• James Watson

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What organism did Thomas Hunt Morgan use for his genetics experiments?

• Neurospora

• Pea plants

• Drosophila melanogaster

• Maize

Which discovery is Barbara McClintock famous for in the field of genetics?

• RNA interference

• Restriction enzymes

• Transposons in maize

• Double helix structure of DNA

Who were the scientists that confirmed DNA as the genetic material?

• Hershey and Chase

• Fire and Mello

• Watson and Crick

• Beadle and Tatum

What structure of DNA was discovered by Watson and Crick?

• Quadruple helix

• Triple helix

• Double helix

• Single helix

What did Marshall Nirenberg and Heinrich Mathei discover?

• The structure of RNA

• RNA interference

• The genetic code

• DNA fingerprinting technique

What is the significance of restriction enzymes in genetic engineering?

• They are used to identify genes

• They are used to attach proteins to DNA

• They are used to mutate genes

• They help in cloning genes

What groundbreaking technique did Alec Jeffreys develop?

• Gene editing

• DNA fingerprinting

• Gene sequencing

• Protein synthesis

Who discovered RNA interference?

• Andrew Fire and Craig Mello

• James Watson and Francis Crick

• Marshall Nirenberg and Heinrich Mathei

• Hamilton Smith

What was a major outcome of the Human Genome Project?

• Discovery of RNA interference

• Discovery of the double helix structure

• Sequencing of the human genome

• Creation of the first synthetic organism