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Big Picture

Image gallery


This gallery contains 14 images about DNA, genomes and health. They can be downloaded from the teachers’ pack and used to illustrate some of the key concepts in this area of science.

DNA sketch
DNA sketch
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Image of the original pencil sketch of the DNA double helix by Francis Crick. It clearly shows the right-handed nature of the helix spiralling around a central axis.
DNA helix
DNA helix
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A molecular model of the DNA double helix showing the sugar phosphate backbone as ribbons and the bases as stick models. Cytosine is shown in pink, adenine in orange, thymine in blue and guanine in green.
Female chromosomes
Female chromosomes
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Normal female karyotype showing 46 chromosomes including two X chromosomes.
Male chromosomes
Male chromosomes
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Normal male karyotype showing 46 chromosomes including one X and one Y chromosome.
Scientist preparing DNA for sequencing
 Scientist preparing DNA for sequencing
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Scientist preparing DNA samples to be loaded into a high throughput DNA sequencing machine. This is part of a project looking at the DNA sequences of different strains of tuberculosis (TB).
DNA sequencing at Sanger
DNA sequencing at Sanger
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DNA sequencing for the Human Genome Project at the Sanger Centre.
Sir John Sulston
Sir John Sulston
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Sir John Sulston, former director of Sanger Centre, Wellcome Trust Genome Campus, Hinxton. Sir John Sulston was awarded the 2002 Nobel Prize for Physiology or Medicine jointly with Sydney Brenner and Bob Horvitz, for the work they had done in understanding the development of the worm and particularly the role of programmed cell death.
Malaria genome
Malaria genome
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A gene map of the malaria genome.
Bacterium genome
Bacterium genome
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A scientist examining a map of the complete Campylobacter jejuni genome. This bacterium is a causative organism of food poisoning and is one of the most common causes of diarrhoea in the world.
Knock-out mice
Knock-out mice
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Chimeric male mouse with his offspring. Some of his cells arise from stem cells carrying the gene for the pale coat colour. This is used as a marker for genetically modified stem cells. The pale coloured pups show that both the pale coat colour and the modified gene is present in his sperm and can be passed on to create genetically altered mice.
Baby with down syndrome
Baby with down syndrome
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A mother and her little boy, 18 months old, who has Down Syndrome. Down Syndrome, a congenital disorder caused by having an extra 21st chromosome.
Identical twins
Identical twins
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Identical twins from Uplands Community College with tubes of their own DNA.
Biobank
Biobank
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Test tubes labelled with 2-D barcodes at UK Biobank, Cheshire, a project which stores and protects a vast bank of medical data and material from volunteers.
Designer babies
Designer babies
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Male and female baby dolls in packages ready for selection.
Wellcome Trust, Gibbs Building, 215 Euston Road, London NW1 2BE, UK T:+44 (0)20 7611 8888