The simple observation of similarities and differences between individual organisms is taken as the starting point for the study of inheritance, a subject which has enormous economic and social importance. A knowledge of the processes of plant and animal breeding has brought about revolutions in agriculture, producing more and more specialised organisms which give bigger and better yields. In understanding the mechanisms behind the breeding, man has approached closely the point where
manipulation of the controlling chemicals brings the potential to predict and control changes in organisms. Crop disease and pest control have become increasingly important.

Throughout the topic, the opportunity should be taken to encourage the use of calculation and the display of data.

This topic has links with several parts of the course but principally the topics of “The Biosphere”, “The World of Plants”, “Animal Survival” and “Investigating Cells”. In many respects, the ideas involved in these topics are a necessary preparation for this part of the course. While it is not a prerequisite of the topic “Biotechnology”, it is hoped that this work will allow for a deeper understanding of the uses of genetic manipulation.

There may be a benefit in consulting with geography departments on aspects relating to man’s use of resources..

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