Starter quiz
- Which type of cell does not store DNA in a nucleus?
- Animal cell
- Plant cell
- Bacteria cell ✓
- Fungi cell
-
- What is stored in DNA?
- an organism's features
- the nucleus
- the genetic code ✓
- cells
-
- Which of the following statements best describe the structure of DNA?
- spiralled
- laddered
- helix
- double-helix ✓
-
- DNA is passed from parent to offspring during which common life process?
- 'reproduction' ✓
- Why was the heredity of features discovered before DNA?
- Organisms only have a small amount of DNA.
- DNA is a chemical so cannot be observed.
- Features can be observed without apparatus, DNA cannot. ✓
-
- What are the four letters that make up the genetic code?
- ACGD
- ATGC ✓
- ADGC
- GCTD
- CGDA
-
Exit quiz
- What did James Watson and Francis Crick discover?
- the role of DNA
- the existence of DNA
- the structure of DNA ✓
- the location of DNA
-
- In 1952 what did Rosalind Franklin produce?
- a computer model
- a photograph
- a physical model
- an X-ray image ✓
-
- What was the name of the scientist in a team with Rosalind Franklin at King's College?
- James Watson
- Maurice Wilkins ✓
- Francis Crick
-
- Put these events in the discovery of DNA in the correct order.
- 1⇔DNA discovered to be a unique chemical molecule.
- 2⇔DNA discovered to be the material involved in heredity.
- 3⇔DNA structure discovered.
- 4⇔DNA sequencing invented.
- Which of the four scientists involved in the discovery of DNA was not awarded the Nobel prize?
- 'Rosalind Franklin' ✓
- All of the DNA in an organism is called the ...
- 'genome' ✓
Worksheet
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Video
Lesson Details
Key learning points
- DNA was discovered in 1869, but scientists did not work out its structure until 1953.
- Scientists collected evidence and shared findings to develop a model to describe the structure of DNA.
- Rosalind Franklin’s team in London used X-rays to produce an image of a DNA molecule in1952.
- Maurice Wilkins from Franklin’s group showed the picture to James Watson from Cambridge.
- Watson and Francis Crick used the picture evidence to complete a model to describe the double helix structure of DNA.
Common misconception
DNA was discovered by Watson and Crick.
The lesson explores the work of various scientists in developing our understanding of DNA, including Rosalind Franklin.
Keywords
Dna - DNA is the chemical substance that genetic material is made out of; it stores the genetic code.
X-ray - An X-ray is a form of radiation that can be used for creating images.
Double helix - DNA has a double helix structure made from two chains in a spiral.
Genome - The genome is all of the genetic material of a cell.
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