Web Activities
UNIT 2 – MOLECULAR GENETICS
Chapter 4 – DNA: The Molecular Basis of Life
Page Number
Question
p. 207
Did You Know?
One Man’s Castle Is Another Man’s Lab
“You can hear (Friedrich) Miescher describe the process
he used to isolate nuclein in an animation found by accessing the Nelson Education science Web site.”
DNA
from the Beginning
DNA from the Beginning is a Web site that describes the major ideas
surrounding DNA. Each idea is supported by animations, problems, biographies,
etc. This portion of the site deals with the discovery of nuclein
by Friedrich Miescher. The link for the animation is at the bottom
of the Web page. The site is maintained by Dolan DNA Learning Center.
p. 208
Did You Know?
Persistence Pays Off
“You can find more information on this classic experiment
(by Oswald Avery, Maclyn McCarty, and Colin McLean) in an animation
by accessing the Nelson Education science Web site.”
DNA
from the Beginning
DNA from the Beginning is a Web site that describes the major ideas
surrounding DNA. Each idea is supported by animations, problems, biographies,
etc. This portion of the site deals with the discovery of nuclein
by Friedrich Miescher. The link for the animation is at the bottom
of the Web page. The site is maintained by Dolan DNA Learning Center.
p. 211
Did You Know?
Elementary, My Dear Crick
“Enjoy Watson and Crick’s deductive process in
an animation found by accessing the Nelson Education science Web site.”
DNA
from the Beginning
DNA from the Beginning is a Web site that describes the major ideas
surrounding DNA. Each idea is supported by animations, problems, biographies,
etc. This animation illustrates how James Watson and Francis Crick determined
the structure of DNA. The site is maintained by Dolan DNA Learning Center.
p. 212
Explore an Issue – Debate: Competition Drives Science
Statement: Competition is the key driving force of science,
followed by collaboration.
- Form groups and research more about this issue. Prepare
a position paper in point form the supports or disputes this statement,
using a specific example.
- Search for information in periodicals, on CD-ROMs, and on
the Internet.
Competing
Theories
A short essay about Competing Theories in computer science, and
the role of competition in the advancement of science
The
Hybrid Vigor Institute
The Hybrid Vigor Institute, based in San Francisco, has the goal
of advancing science by linking together researchers from a variety
of disciplines to answer specific scientific problems in medicine,
human perception, and environmental/earth sciences.
History
of Science Links
History of Science Links is a list of websites, arranged by topic,
that cover a whole gamut of major advances throughout the ages.
Look for evidence in these sites of competition and collaboration.
Science
Organizations
This listing of Science Organizations includes brief descriptions
of each site. Many of these organizations have the goal of fostering
contact, and collaboration, between scientists.
p. 218
Did You Know?
Room Service, Please
“Watch an animation of Stahl and Meselson’s famous
experiment by accessing the Nelson Education science Web site.”
DNA
from the Beginning
DNA from the Beginning is a Web site that describes the major ideas
surrounding DNA. Each idea is supported by animations, problems, biographies,
etc. This animation illustrates the procedure followed by Matthew
Meselson and Franklin Stahl as they determined that DNA replicates
semiconservatively. The site is maintained by Dolan DNA Learning Center.
p. 222
Did You Know?
Proofreading for Accuracy
“View a complete animation of DNA replication by accessing
the Nelson Education science Web site.”
DNA
Replication
DNA Replication is a short, simple animation from New Century College
at George Mason University that illustrates the process of DNA replication.
The animation shows the role of DNA polymerase, helicase, primase,
ligase, and Okazaki fragments. The animation requires Shockwave.
p. 223
Section 4.3 questions
One of the consequences of DNA polymerase III only being able
to elongate and not initiate a complementary strand is that RNA primers
need to be added. Since DNA polymerase III only works in the 5' to 3'
direction, an end of one strand is consistently missing some of its
base pairs after replication. To compensate, eukaryotic cells have noncoding
sequences of their DNA at the ends called telomeres. As people age,
telomeres shorten and therefore less protection is afforded against
damaging coding DNA. Research the connection between telomeres and aging.
Prepare a report of your findings.
Telomeres
Part of a Scientific American article on “The Truth about Human
Aging”, this page summarizes the scientific research on Telomeres
and their relevance to aging. It includes a substantial list of references.
Telomeres
in the News
Telomeres in the News is a list of links to popular press articles
written between 1996 and 1998. This page is located on the Web site
of a telomere researcher at the University of Colorado.
