DNA + Its Discovery

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  • Created by: eemoyeni
  • Created on: 18-01-14 21:17
Step 1 of Extracting DNA
Kiwi fruit is mashed up and mixed with salty water and detergent. This breaks open the cells and helps to release the DNA from the nuclei.
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Step 2 of Extracting DNA
Protease enzyme is added to the filtered mixture. The enzyme helps to break up proteins in cell membranes and so release more DNA.
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Step 3 of Extracting DNA
Ice-cold ethanol is poured carefully down inside the tube into the mixture. The ethanol makes the DNA separate from the liquid so it is easy to lift.
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Who used X-rays to study DNA?
Maurice Wilkins and Rosalind Franklin studied the structure of DNA using X-rays.
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Who worked out how the atoms were grouped?
Franklin studied X-ray photographs of DNA to work out how the atoms were grouped.
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What did Watson and Crick do?
James Watson and Francis Crick interpreted data from other scientists in their study of DNA structure.
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What did Franklin's photographs help with?
The photographs were the final clue that helped them build the double helix model.
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How was the human genome decoded?
Scientists in 18 different countries collaborated to decode the human genome.
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What is the Human Genome?
This is the order of bases on all the human chromosomes.
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Why and when was the human genome work published?
The work was published in 2003 so that any scientist can use the information to develop new medicines and techniques.
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What is an advantage of identification of faulty genes?
Knowing if you have a faulty gene could help a person and their family prepare for its effects.
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What is gene therapy?
This involves replacing faulty alleles in body cells with healthy ones. This would allow the affected person to live a normal life.
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Other cards in this set

Card 2

Front

Step 2 of Extracting DNA

Back

Protease enzyme is added to the filtered mixture. The enzyme helps to break up proteins in cell membranes and so release more DNA.

Card 3

Front

Step 3 of Extracting DNA

Back

Preview of the front of card 3

Card 4

Front

Who used X-rays to study DNA?

Back

Preview of the front of card 4

Card 5

Front

Who worked out how the atoms were grouped?

Back

Preview of the front of card 5
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