DNA Fingerprinting, X-ray Autoradiograph
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DNA Fingerprinting, X-ray Autoradiograph
The photo shows part of an X-ray (or autoradiograph) of bands of DNA produced by the technique of electrophoresis in an agarose gel. The pattern of these DNA bands is unique to each individual, but some bands are shared by related people, such as a parent & child. DNA fingerprints can be used to prove conclusively whether people are related. The bands in these DNA fingerprints are marked M for mother, C for child, F for father. Both children share some bands with each parent, proving that they are indeed related. The double-helix model of DNA structure was first published in the journal Nature by James D. Watson and Francis Crick in 1953, based upon the crucial X-ray diffraction image of DNA labeled as " Photo 51", from Rosalind Franklin in 1952
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Media ID 6361799
© DAVID PARKER/SCIENCE PHOTO LIBRARY
Alec Jeffreys Autoradiogram Autoradiograph Child Crick Double Helix Electrophoreisis Family Father Finger Print Franklin Genes Genetic Material Helix Maternal Mother Nucleic Acid Nucleotide Parent Parental Paternal Radiography Test Testing Watson X Ray Bio Chemistry Deoxyribonucleic Acid Genetics
EDITORS COMMENTS
This print showcases the groundbreaking technique of DNA fingerprinting through an X-ray autoradiograph. The image reveals a section of an agarose gel electrophoresis, displaying distinct bands of DNA. Each individual possesses a unique pattern of these bands, making it possible to conclusively determine familial relationships. In this particular snapshot, the labeled bands M for mother, C for child, and F for father demonstrate shared genetic markers between parents and their offspring. The discovery of the double-helix structure by James D. Watson and Francis Crick in 1953 revolutionized our understanding of genetics. However, it was Rosalind Franklin's pivotal X-ray diffraction image known as "Photo 51" from 1952 that provided crucial insights into DNA's molecular structure. DNA fingerprinting has become an indispensable tool in biology and forensic science alike. By analyzing specific regions within the deoxyribonucleic acid (DNA) molecule called nucleotides, scientists can unravel intricate details about an individual's genetic makeup. This conceptual photograph not only pays homage to scientific pioneers like Watson, Crick, and Franklin but also highlights the significance of Alec Jeffreys' pioneering work in developing DNA fingerprinting techniques in the late 20th century. As we delve deeper into the fascinating world of genetics and explore its implications on familial relationships and human identity, this print serves as a reminder that every person carries their own unique genetic signature encoded within their DNA strands.
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