Valley Forge, 1777 (The American Revolution)
When the Continental Army made camp at Valley Forge during the American Revolution, times were tough. The winter was bitter cold, and there was disease and hunger. (01:30)

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4 From DNA to RNA: transcription

In the process of transcription, the information in a gene, i.e. the DNA base sequence, is copied, or transcribed, to form an RNA molecule. RNA is therefore an intermediary in the flow of information from DNA to protein. Before we consider the details of transcription, we will first look at the structure of RNA.

The name ribonucleic acid suggests that RNA is chemically related to DNA. Like DNA, RNA is a chain of nucleotides.

Author(s): The Open University

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Copyright © 2016 The Open University

Learning outcomes

After studying this course, you should be able to:

  • understand some of the ways in which genetic knowledge could affect medical practice, in particular in relation to predictive medicine

  • understand how populations are screened for conditions such as phenylketonuria and whether screening could be used for carriers of recessive genetic disorders such as cystic fibrosis

  • understand how gene chips may be used to screen for large numbers of genes at once,
    Author(s): The Open University

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    Copyright © 2016 The Open University

#253: Sedimental journey: Probing climate's buried past to predict our future

Paleoclimatologist Prof Jonathan Overpeck describes how research into uncovering the earth’s climate history generates important insights about our climate future. Presented by Dr Shane Huntington.