Selection, genetic death, and genetic radiation damage

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Date
1959
Summary
Portrays the frequency of a mutant in the gene pool as reaching a state of equilibrium when, per generation, its origination by mutation equals its elimination by genetic death. Discusses genetic death and presents examples of how genetic loads are changed subsequent to radiation exposure.  Pictures the great majority of mutants as harmful when homozygous, but some cases, as in sickle call anemia, heterozygotes are adaptively superior to normal homozygotes.  Explains balanced polymorphism, by which a gene is retained in the population despite its lethality when homozygous because of the advantage it confers when heterozygous.  Lectures given by Dr. Thomas Dobzhansky.
Publishers
McGraw-Hill Text-Films; Indiana University Audio-Visual Center
Genres
Educational; Lecture
Subjects
Genetics; Mutation (Biology); Radiation
Collection
IUL Moving Image Archive
Unit
IUL Moving Image Archive
Rights Statement
No Copyright - United States
Physical Description
1 Film (0:33:00); 16mm
Other Identifiers
IULMIA Film Database: 30000136649377; Other: GR00420019; MDPI Barcode: 40000003362441

Access Restrictions

This item is accessible by: the public.