DNA

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  • Created by: joshd
  • Created on: 08-03-14 08:58
What is DNA?
A double helix of paired bases.
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What does a DNA molecule have?
Two strands coiled together in the shape of a double helix?
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What are the strands held together by?
Chemicals called bases.
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What are the four different bases and their colours?
Adenine (A) - Red , Cytosine (C) - Green, Guanine (G) - Yellow and Thymine (T) - Blue
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What bases pair with which and what is this called?
A-T, C-G. Base-pairing
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What are the base pairs joined together by?
Weak hydrogen bonds.
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What is a gene? What do the sequence of bases in a gene code for?
A section of DNA. The sequence of bases in a gene code for a specific protein.
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Who discovered the structure of DNA?
Watson, Crick, Franklin and Wilkins.
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What was first worked out for the structure of DNA and who by?
Rosalind Franklin and Maurice Wilkins worked out that DNA had a helical structure by directing beams of x-rays onto crystallised DNA and looking at the patterns the x-rays formed as they bounced off.
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Who developed the ideas about the structure of DNA and what did they do?
James Watson and Francis Crick developed these ideas, as well as the knowledge of base pairing and made a model of the DNA molecule, where all the pieces fitted together.
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Other cards in this set

Card 2

Front

What does a DNA molecule have?

Back

Two strands coiled together in the shape of a double helix?

Card 3

Front

What are the strands held together by?

Back

Preview of the front of card 3

Card 4

Front

What are the four different bases and their colours?

Back

Preview of the front of card 4

Card 5

Front

What bases pair with which and what is this called?

Back

Preview of the front of card 5
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