Bt Toxin as an Organic Insecticide
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
Bacillus thuringiensis produces a protein crystal toxic to specific insects when ingested; cloning its gene into a plant makes the plant insecticidal.
Show
A plant carrying the cloned Bt toxin gene stops insects that ingest it from feeding within hours.
Watch for
Bt toxin must be ingested and activated in the insect gut — it is not a contact poison, and is nontoxic to mammals.
Builds on
Unlocks
- Nothing yet depends on this.