Available online
Description
The programme describes attempts to produce novel re-combinations of the genetic material of widely different organisms. Some practical applications are discussed.
The programme describes attempts to produce novel re-combinations of the genetic material of widely different organisms. Some practical applications are discussed.
| Module code and title: | S299, Genetics |
|---|---|
| Item code: | S299; 16 |
| First transmission date: | 12-10-1976 |
| Published: | 1976 |
| Rights Statement: | |
| Restrictions on use: | |
| Duration: | 00:23:52 |
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| Producer: | Roger Jones |
| Contributors: | Peter S. Carlson; Peter Day; David Jones |
| Publisher: | BBC Open University |
| Keyword(s): | Cell fusion; Cellular engineering; Cross-pollenisation; DNA; Genetic manipulation; Hybrids; Reproduction |
| Footage description: | David Jones introduces the programme. Film shots, under magnification, of tobacco plant protoplasts (from pink flower cells and green leaf cells). These are seen to coalesce and fuse as an example of parasexual hybridisation. More shots, from previous programmes, of examples of genetic manipulation. Jones poses the question, 'What is genetic engineering? Peter Carlson gives his definition of genetic engineering and lists two broad approaches, one using cells, the other using DNA molecules. Carlson goes on to explain, briefly, the technique of parasexual hybridisation and some of the implications this may have for mapping human chromosomes. David Jones, with a laser beam apparatus, explains and demonstrates the use of microbeams to destroy specific portions of chromosomes. This technique is used to map genes on chromosomes. Jones uses a model of a chromosome to help make his points. Shots of various varieties of tomatoes in a greenhouse. Peter Day examines an uncommon tomato plant, Solanum pennellii. He points out some of its features and also lists some of the qualities which would be desirable in crop plants (resistance to fungus disease, insect pests, etc.) Peter Day explains and demonstrates how a chimera between Solanum pennellii and a crop tomato is produced by cellular engineering techniques. Shots of the resulting chimera. Day lists its characteristics. Peter Carlson discusses the technique of generating novel re-combinant DNA molecules between DNA derived from different species. He explains how this is done for linking frog DNA with bacterial DNA and then briefly discusses the implications of these techniques. David Jones discusses the possibility of using genetic engineering techniques to improve, for example, the efficiency of wheat photosynthesis and disease resistance of cauliflowers. Shots of naked plant cells and cauliflower leaves. Shots of virus particles in an infected cauliflower leaf. Jones and then Peter Carlson sum up. |
| Master spool number: | 6HT/72174 |
| Production number: | 00525_1184 |
| Videofinder number: | 1005 |
| Available to public: | no |
