Milestones in the Discovery of DNA Quiz

Test your knowledge on key discoveries in DNA research. From double helix structure to replication, explore pivotal moments in genetics history.

#1

In the DNA double helix, adenine pairs with which other base?

Thymine
Cytosine
Guanine
Adenine
#2

Which enzyme is responsible for 'unzipping' the DNA double helix during replication?

DNA ligase
DNA polymerase
DNA helicase
RNA primase
#3

In the context of DNA, what does the term 'complementary' mean?

Having identical sequences
Having opposite sequences
Having a different structure
Having a similar function
#4

Which technique allows the amplification of specific DNA sequences in vitro?

Polymerase chain reaction (PCR)
DNA sequencing
Gel electrophoresis
Southern blotting
#5

What is the term for the process by which RNA is synthesized from a DNA template?

Replication
Translation
Transcription
Reverse transcription
#6

Who is credited with the discovery of the double helix structure of DNA?

James Watson and Francis Crick
Rosalind Franklin
Linus Pauling
Maurice Wilkins
#7

Which X-ray diffraction photograph provided crucial evidence for the structure of DNA?

Photograph 51
Photograph 42
Photograph 66
Photograph 29
#8

What is the role of RNA primase in DNA replication?

Unzips the DNA double helix
Initiates DNA synthesis
Adds RNA primers to the template strand
Proofreads and repairs DNA
#9

What is the term for the sequence of three nucleotides that codes for a specific amino acid in a protein?

Codon
Anticodon
Triplet
Gene
#10

Which nitrogenous base is not found in RNA?

Adenine
Thymine
Cytosine
Uracil
#11

What is the name of the scientist who discovered that DNA is the genetic material of the cell?

Erwin Chargaff
Barbara McClintock
Oswald Avery
Gregor Mendel
#12

What is the function of DNA polymerase in DNA replication?

Initiates DNA synthesis
Unzips the DNA double helix
Adds nucleotides to the growing DNA strand
Repairs damaged DNA
#13

Which scientist proposed the model of DNA replication known as the 'semi-conservative model'?

James Watson
Francis Crick
Maurice Wilkins
Meselson and Stahl
#14

Who discovered the enzyme DNA helicase?

Francis Crick
Rosalind Franklin
James Watson
Kornberg and Lehman
#15

What is the function of DNA ligase in DNA replication?

Adds RNA primers to the template strand
Joins Okazaki fragments
Unzips the DNA double helix
Initiates DNA synthesis

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