Cytoplasm and Differentiation

Duration: 33

Format: 16mm

Color: Color

Description: Explores the relationship between genes and development both directly and through the delegation of genetic powers. Shows how the cytoplasm of some green plants determines the color of the offspring and in frogs, diagrams an experiment illustrating cytoplasmic control of development. Recounts how some genes can make different types of cells differentiate and points to experiments with the African violet, sea urchin, rabbit, and newt. Explains genetic control over the pituitary of mice that indirectly affects animal size. Pictures an on-the-spot effect, a white eye spot mutation in a red-eyed drosophila. Charts the pedigree of causes of sickle-cell anemia. Points out the diverse activity of the same genotypes. Summarizes that more study is needed on the action of genes and development before we may pretend to understand them.

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Indiana University Library Moving Image Archive

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Original permalink · Record added: 2024-04-22 21:31:03