1 / 8

Genomes and mutagenesis

Genomes and mutagenesis. Figure 9.15. The Ames test relies on a mutant bacterial strain that is defective in hisG. - Cannot grow on a medium lacking histidine. Identifying Mutagens. - A mutagen-containing disk is placed on an agar plate with the mutant.

isleen
Download Presentation

Genomes and mutagenesis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Genomes and mutagenesis

  2. Figure 9.15

  3. The Ames test relies on a mutant bacterial strain that is defective in hisG. - Cannot grow on a medium lacking histidine Identifying Mutagens - A mutagen-containing disk is placed on an agar plate with the mutant. - Mutagen causes reversion mutations, and colonies start to appear around the disk. Figure 9.22

  4. The Ames assay can be modified to test for the mutagenicity of chemicals processed in the liver. Figure 9.23

  5. Transposons are complex transposable elements that carry additional genes (e.g., drug resistance). Mobile Genetic Elements Figure 9.34

  6. Gene A Gene 1 Gene 2 Gene 3 Fig. 11-33 Transposon Chromosome Transposition Disrupted gene 2 Gene 1 Gene A Gene 3 Chromosome

More Related