The Human influence
Description
This program illustrates how natural selection works to enable a species to adapt to adverse environments; shows how human breeding of desirable varieties-which antedates by millennia any theories of genetics or evolution-often overrode natural selection; demonstrates how species can be changed by artificial selection and in response to human interference with the environment; and explains the desirability of preserving the gene pool. After viewing the program, students should understand how environmental changes and artificial selection alter the random variability in a population, how breeders strengthen rather than create variation, and why it is so important to preserve the gene pool.
Runtime
20 min
Series
Subjects
- Nature (209)
- Physical anthropology (61)
- Human evolution (75)
- Biodiversity (348)
- Heredity, Human (127)
- Human ecology (350)
- Genetics (271)
Genre
Date of Publication
[2005], c1988
Database
Films on Demand
Direct Link
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