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The chemical structure of DNA

This video looks at how the chemical properties of DNA can be harnessed for a variety of biotechnology applications.

Used with permission from the Howard Hughes Medical Institute, Copyright (2003).  All rights reserved. www.BioInteractive.org.

This resource is part of the Post 16 genetics and ...

DNA packaging

This animation describes how DNA is tightly packed in the nucleus of every cell. DNA wraps around special proteins called histones, which form loops of DNA called nucleosomes. These nucleosomes coil and stack together to form fibers called chromatin. Chromatin in turn forms larger loops and coils to form...

Watson constructing base pair models

During the process of trying to elucidate the structure of DNA, Jim Watson made some cardboard models to try to understand how DNA nucleotides are paired. It helped him visualize how hydrogen atoms of paired nucleotides interact with each other to form a symmetrical structure that fits the double helix model.

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Chargaff's ratio

This animation looks at research which led to solving the structure of DNA.  In 1950, Erwin Chargaff published a paper stating that in the DNA of any given species, the ratio of adenine to thymine is equal, as is the ratio of cytosine to guanine. This became known as Chargaff's ratio, and it was an important clue...

Paired DNA strands

This animation illustrates the DNA double helix structure. If untwisted, DNA looks like two parallel strands. Each strand has a linear sequence of A, C, G, and T. The precise order of the letters carries the coded instructions. One strand is a complementary image of the other: A always pairs with T, and C always...

DNA 3-D

A 3-D movie that journeys into the human cell revealing DNA.

Courtesy: National Human Genome Research Institute.

This resource is part of the Post 16 genetics and genomics collection of resources.

Importance of exploration

The Northern Lights have been the subject of wonder for millennia.  In this film, physicist Melanie Windridge explores the arctic in her search for the aurora borealis, or Nothern Lights.  She briefly explains how the Northern Lights are formed and the links between science and exploration.

Melanie also...

Very Large Telescope

From the European Southern Observatory (ESO), this video describes the construction and work of the Very Large Telescope (VLT). The VLT was made in Europe and will be erected on Cerro Paranal, a 2,640 metre high mountain in the Atacama desert in northern Chile. This video describes the VLT project and some of the...

Tim Peake

This video is a message to ESERO-UK from European Space Agency astronaut Tim Peake. He talks about studying STEM subjects and how he became an astronaut. The video includes images of a launch, Tim engaging in various astronaut training exercises and the International Space Station, where Tim will be for six months...

The Orion Nebula

The Orion Nebula reveals many of its hidden secrets in the dramatic images taken by the European Southern Observatory's VISTA survey telescope. This video showcases some of them and describes some of the processes occurring in the Orion nebula. VISTA (the Visible and Infrared Survey Telescope for Astronomy) is the...

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