1. DNA review for test http://video.google.com/videoplay ?docid=-5878733356144169008#

2. What does DNA stand for:_______________ Deoxyribose Nucleic Acid

3. Name of a virus that infects bacteria: ______________________________ A diagram which shows the inheritance of a genetic characteristic through several generations: Bacteriophage

5. What 2 molecules did Hershey and Chase radiolabel?_______________________ What did they figure out was being injected into the bacteria: _____________________________ DNA and Protein DNA

6. How many strands does DNA have:______ What are the smaller subunits that make up DNA called:_____________________ Watson and Crick said the shape of DNA is a ____________________ Nucleotides 2 Double helix

7. What is the name of this molecule: __________ Nucleotide It is composed of: Label A._____________ B._____________ C._____________ Phosphate group Sugar Nitrogen Base A B C

8. How many Rings do Purines have and how many do Pyrimidines have:________ What is the name of the sugar of DNA:____________________ 2,1 Deoxyribose

9. Who took the X-ray pics that showed DNA as a tightly coiled helix:________________ What scientists get the MAJOR credit for building the double helix model of DNA:________________ Franklin and Wilkins Watson and Crick

10. Nitrogen bases bind according to the base-pairing rules: Who came up with the base-pairing rules:__________________________ A = T and C = G Chargaff

11. Give the New complementary strand for the following original DNA sequence TCGAA: ___________ What is the name of the enzyme that opens and unwinds the DNA molecule so it can be copied:______________________ AGCTT DNA Helicase

12. What is the name of the process of copying DNA:______________________ What stage of the cell cycle does this process occur:________________ DNA Replication S phase of Interphase

13. What is the name of the enzyme that adds nucleotides to DNA according to base-pairing rules:______________________ Describe the basic steps of DNA replication: 1.DNA helicase unwinds DNA 2. DNA polymerase adds nucleotides to DNA template 3. 2 new DNA molecules form, identical to original DNA polymerase

14. Chp 8: colorblindness gene is located on the X chromosome, what type of inheritance is this: Replicate the following sequence according to the base pairing rules CGTAACCT GCATTGGA

15. Label the following as Purines or Pyrimidines: A B A= B= Purines Pyrimidines

16. Name the enzyme that can proofread DNA sequences: If a red and a white flower have pink babies, what type of inheritance is this: DNA polymerase

17. How many replication forks do the DNA molecules of Prokaryotes have and how many do Eukaryotes have? Prokaryotes = 2 and Euk= many

18. What is A pointing to?_____________ A A Replication Fork