Chapter 16 Resources -  DNA 

DNA extraction lab power point           Home Page

• DNA class notes power point
• DNA animations and websites        

• Drawing of semi conservative replication

•    The difference between a dominant and a recessive allele that allows the dominant to show up is due to.............

 in class DNA replication model

Review questions

1.  What is transformation in bacteria?  How did Griffith know that transformation has occurred in his mouse experiment?

2. Our present understanding of the structure of DNA comes from the work of many scientists. Make a statement of contribution toward our understanding of DNA from each of the following scientists.  

    Hershey and Chase;       Chargaff;       Roaslind Franklin;       Watson and Crick

3.  What structural characteristics in adenine, thyminem guanine and cytosine account for the way the bases pair in DNA?

4.  Explain how the structure of DNA  helps ensure that the genetic code (DNA) remains accurate.  AND

5.  What other cellular mechanisms are present to help maintain genetic stability/accuracy?

6.  What are telomeres?    AND    explain  how they keep getting shorter after each mitosis.