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UNIT 30A

UNIT 30B

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UNIT 30D

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Chapter 22 - Beyond Mendel

Page 93

Did You Know: One Man's Castle Is Another Man's Lab

You can hear Miescher describe the process he used to isolate nuclein in an animation found by accessing the Nelson 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 .

Page 96

Web Activity: Canadian Achievers: Avery and MacLeod

Canadian-born scientists Oswald Avery and Colin MacLeod spent their early years as scientists in Nova Scotia , where they were born. They met in New York , where, together with American scientist Maclyn McCarty, they painstakingly isolated components of pneumococci ( Streptococcus pneumoniae ) for over a decade before identifying DNA as the transforming principle. You can find more information on this classic experiment in an animation by accessing the Nelson science Web site.

Oswald T. Avery

This page is a biography on the work of this scientist and physician, and has links to descriptions of his many important contributions.

Colin MacLeod

This page, from About.com, summarizes the work and life of Colin MacLeod.

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 work of Avery, MacLeod, and Griffith. The link for the animation is at the bottom of the Web page. The site is maintained by Dolan DNA Learning Center .

Page 99

Elementary, My Dear Crick

Erwin Chargaff visited Watson and Crick in Cambridge in 1952. Crick's lack of knowledge with respect to nitrogenous bases did not impress Chargaff. By the following year, Watson and Crick had constructed their model of DNA. Enjoy Watson and Crick's deductive process in an animation found by accessing the Nelson 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 .

Page 100

Explore an Issue: Competition and Collaboration Advance ScienceStatement

Competition is the key driving force of science, followed by collaboration.

.    Form groups to research this issue. Prepare a position paper in point form that 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.

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