DNA review for test

http://video.google.com/videoplay?docid=-5878733356144169008#

• What does DNA stand for:_______________

Deoxyribose Nucleic Acid

• Name of a virus that infects bacteria:

______________________________

• A diagram which shows the inheritance of a genetic characteristic through several generations:

Bacteriophage

• What 2 molecules did Hershey and Chase radiolabel?_______________________

• What did they figure out was being injected into the bacteria:

_____________________________

DNA and Protein

DNA

• 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

What is the name of this molecule:

__________Nucleotide

It is composed of: Label

A._____________

B._____________

C._____________

Phosphate group

Sugar

Nitrogen Base

A

B

C

• How many Rings do Purines have and how many do Pyrimidines have:________

• What is the name of the sugar of DNA:____________________

2,1

Deoxyribose

• 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

• Nitrogen bases bind according to the base-pairing rules:

• Who came up with the base-pairing rules:__________________________

A = T and C = G

Chargaff

• 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

• 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

• 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

• 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

•Label the following as Purines or Pyrimidines:

A

B

A=

B=

Purines

Pyrimidines

• 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

• How many replication forks do the DNA molecules of Prokaryotes have and how many do Eukaryotes have?

Prokaryotes = 2 and Euk= many

•What is A pointing to?_____________

AA

Replication Fork