Download I. DNA Discovery

Biology
DNA Worksheet
Name ______________________________
Period ___________
Use information from Chapter 12 of your textbook, and information from the DNA timeline found on the
website under “links” to help you complete this outline.
I.
A.
II.
A.
DNA Discovery
Scientists who contributed to the idea that DNA carries the genetic code. Describe each of the
following scientist experiment and what conclusion their experiment lead to in the understanding of the
role of DNA.
1.
Griffith –
2.
Avery, McCarty and MacLeod –
3.
Hershey and Chase –
DNA Structure
Scientists who contributed to an understanding of DNA structure and function. Describe how each
scientist contributed to the discovery of the structure of DNA.
1.
Franklin –
2.
Watson and Crick –
3.
Chargaff –
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B.
Function of DNA is
C.
Parts of a DNA nucleotide are
D.
Describe the shape of a DNA molecule.
III. DNA Replication
A.
Describe the replication of a DNA molecule.
B.
Explain why DNA replication is necessary for the continuation of life.
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Biology 137
Chapter 7
“History” Worksheet
Name ______________________________
Use the following key to answer questions #1-11. Match the statement with the scientist’s experiment to which
it corresponds. Answers may be used more than once. Not all answers have to be used.
______
Determined that adenine bonds to thymine and
cytosine bonds to guanine
______
Built 3-D models of the DNA molecule
______
Took x-rays of DNA strands
______
Proved that the cause of pneumonia was not a chemical
poison released by bacteria
______
Concluded that DNA carries genetic information
______
First to demonstrate the process of transformation
______
First to discover the identity of the “transforming”
factor
______
Tried to determine which parts of a virus infect the
inside of bacteria
______
Used others x-ray photos to determine the structure of
DNA
a. Griffith
b. Avery
c. Hershey and Chase
d. Chargaff
e. Watson and Crick
f. Franklin and Wilkins
______ Observed that the amount of adenine equals the
amount of thymine, and that the amount of guanine
equals the amount of cytosine in any sample of DNA
______ Determined that the protein core of a virus is not what
enters and infects bacteria
Several scientists received the Nobel Prize for their contributions to the discovery of DNA structure. One who
worked in this area did not receive the Nobel Prize. Who were they, and why weren’t they awarded the
prize along with their colleagues?
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The Hershey-Chase
Blender Experiment
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