The experiments by Hershey and Chase helped confirm that DNA was the hereditary material on the basis of the finding that: a. radioactive phage were found in the pellet b. radioactive cells were found in the supernatant c. radioactive sulfur was found inside the cell d. radioactive phosphorus was found in the cell

Several experiments aided the discovery of DNA being the inheritable material. Which of the following experiments clearly demonstrated DNA, not protein, was the inheritable material?

fellow lab worker brings you DNA containing what might be a similar gene in Leopard Geckos (XG). She asks you to see if you can amplify it using the same primers you used in frogs and the Bearded Dragon. You run the PCR and then analyze the product by running the DNA on an agarose gel. As a control, you run out the PCR product you amplified in Bearded Dragons and a DNA “ladder” of DNA pieces of known sizes. The gel results are shown below. Marker = DNA ladder; Lane A = Bearded Dragon PCR product; Lane B = Leopard Gecko PCR results. In the box below, determine the sizes of the PCR products shown in Lanes A & B. Size of Bearded Dragon PCR product: ______________________________  Sizes of Leopard Gecko PCR products: ______________________ yes or No - based on the results shown in the gel above – would you say the frog PCR primers for gene X amplified the same gene in the Bearded Dragon?

One of the key discoveries Avery's work contributed to the discovery of the genetic material was that enzymes that break down DNA made the tranforming principle inactive. Enzymes that break down proteins or RNA had no effect on the transforming material.   True   False

In sequential order, what are the three steps of PCR?   A. Denature DNA, Anneal Primers, Extend DNA   B. Denature DNA, Extend DNA, Anneal Primers   C. Anneal Primers, Extend DNA, Denature DNA   D. Extend DNA, Anneal Primers, Denature DNA

Defects in the excision  repair process may result in : A. Mutations B. Okazaki fragments C. Excess DNA polymerase activity D. Shortened telomeres