Genetics Exam II

In the Avery & Co experiment to identify Griffith's
"transforming factor", bacterial transformation was
prevented when they added

• helicase

• RNAse to destroy RNA

• DNAse to destroy DNA

• protease to destroy proteins

• enzymes to destroy lipids

In Hershey & Chase's experiment with bacteriophages, the radiolabeled DNA was ultimately found:

• In the pellet containing the bacteria

• Inside the viral "ghosts" C.

• In the supernatant

• Outside of the test tube

• It was never found

Telomerase can extend the ends of chromosomes by making a complementary copy of

• the end of the leading strand

• the end of the lagging strand

• its own RNA template

• the last RNA primer

• the homologous chromosome

Based on the sequencing gel below, what was the sequence of the template strand of DNA? [Hint: the new strand is read directly from the gel in the 5' - 3' direction]

• 3'-GCACTGCTATAGCTCTGAT-5'

• 3'-ATCAGAGCTATAGCAGTGC-5'

• 5'- GCACTCTATAGCTCTGAT-3'

• 5'-TAGTCTCGATATCGTCACG-3'

• There is no way to know without more information

Osman and the mom from Diary of a Wimpy Kid are married. They have three children together. However, Osman suspects that she may have been cheating. He has all three kids' DNA tested, and the results are shown in the gel to the right.
 Are all children Osman's?

• No, child 1 is not mine

• No, child 2 is not mine

• No, child 3 is not mine

• Yes, all three are mine

• None of these children are mine

Who discovered the DNA Structure?

• Watson

• Crick

• Rosalind

• Hershey and Chase

• Hershey and Chase