Genomics: The New Map of Life. (Science & Technology)

By Tally, Steve | USA TODAY, November 2001 | Go to article overview
Save to active project

Genomics: The New Map of Life. (Science & Technology)


Tally, Steve, USA TODAY


THE STATE OF THE ART in life science--biology, medicine, and agriculture--resembles the situation geographers found themselves in centuries ago. Early cartographers had a small bit of information and tried, with obvious errors, to produce a view of what the world looked like. The maps of that era were equally off target, with misshapen or missing continents and dire warnings about the dangers and dragons that existed in the unknown waters.

A teacher in the third century A.D., Lactantius Firmianus, said, "Can there be a place on Earth where things are upside down, where the trees grow downwards, and the rain, hail, and snow fall upward? The mad idea that the Earth is round is the cause of this imbecile legend." Although early concepts of the world are comical today, those ideas of how the world worked were then quite reasonable, given the information they had.

Just as explorers such as Christopher Columbus, Ferdinand Magellan, and Hernando Cortes brought rapid change to the understanding of the Earth, a new field of biology promises to bring great and fast strides into the understanding of living organisms. The new area of study focuses on the genes of living organisms, first by mapping out the structure of all of the individual genes of the organisms, then by figuring out what all of those thousands of genes actually do. This new map of life is called genomics.

"It's quite a change to think that any of this is possible," indicates Jeffrey Bennetzen, Purdue University's H. Edwin Umbarger Distinguished Professor of Genetics. "Six or seven years ago, we wouldn't have even thought about doing these genomics experiments." Over the past few years, however, new laboratory techniques have been developed that allow scientists to make discoveries that just a decade ago seemed impossible.

The genomics revolution has been spurred in part by new automated machines that can quickly determine the structure of genes. "Before, it might have taken us two years to determine the structure of one particular genome," Bennetzen notes. "Now, we expect to do the same region in a couple of weeks."

Before genomic techniques were developed, if a scientist was interested in finding the genes that caused a certain trait, it was not unheard of for him to spend his entire career identifying those genes. That process required painstakingly comparing the genes of the plant or animal that had the trait with the genes of those in which the trait was lacking.

With genomics, scientists take a different approach. They use automated equipment to map out rapidly the sequence of all the genes in an organism. Then, in a step that is still somewhat painstaking, they go back and figure out what each of those genes does.

Although the gene sequencing of important organisms is obviously a finite activity, Randy Woodson, director of Purdue's Office of Agricultural Research Programs, maintains that genomics is a field of science that will be around for decades to come. "The science of genomics isn't going to be over tomorrow. There will be a five- to 10-year period of intense activity, especially in the sequencing of genes. At that point, we will have come full circle and come back to a point where physiology and biochemistry and other sciences will be needed to understand the functions of the genes and how these processes work."

Bennetzen predicts that, when scientists understand all of an organism's genes and what each of them does, they will have a near-complete understanding of how the organism works. "That's it. That's biology. That's why genomics is such a big, blossoming field. Now we can understand an organism comprehensively. Of course, there are a lot of organisms out there. In the end, what genomics has as its goal is to understand all of the genes in all of the organisms on the entire planet."

The idea that we may know all of the genes of all of the organisms on the planet may seem absurd.

The rest of this article is only available to active members of Questia

Sign up now for a free, 1-day trial and receive full access to:

  • Questia's entire collection
  • Automatic bibliography creation
  • More helpful research tools like notes, citations, and highlights
  • Ad-free environment

Already a member? Log in now.

Notes for this article

Add a new note
If you are trying to select text to create highlights or citations, remember that you must now click or tap on the first word, and then click or tap on the last word.
One moment ...
Project items

Items saved from this article

This article has been saved
Highlights (0)
Some of your highlights are legacy items.

Highlights saved before July 30, 2012 will not be displayed on their respective source pages.

You can easily re-create the highlights by opening the book page or article, selecting the text, and clicking “Highlight.”

Citations (0)
Some of your citations are legacy items.

Any citation created before July 30, 2012 will labeled as a “Cited page.” New citations will be saved as cited passages, pages or articles.

We also added the ability to view new citations from your projects or the book or article where you created them.

Notes (0)
Bookmarks (0)

You have no saved items from this article

Project items include:
  • Saved book/article
  • Highlights
  • Quotes/citations
  • Notes
  • Bookmarks
Notes
Cite this article

Cited article

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

(Einhorn, 1992, p. 25)

(Einhorn 25)

1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited article

Genomics: The New Map of Life. (Science & Technology)
Settings

Settings

Typeface
Text size Smaller Larger
Search within

Search within this article

Look up

Look up a word

  • Dictionary
  • Thesaurus
Please submit a word or phrase above.
Print this page

Print this page

Why can't I print more than one page at a time?

While we understand printed pages are helpful to our users, this limitation is necessary to help protect our publishers' copyrighted material and prevent its unlawful distribution. We are sorry for any inconvenience.
Full screen

matching results for page

Cited passage

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn, 1992, p. 25).

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences."1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited passage

Welcome to the new Questia Reader

The Questia Reader has been updated to provide you with an even better online reading experience.  It is now 100% Responsive, which means you can read our books and articles on any sized device you wish.  All of your favorite tools like notes, highlights, and citations are still here, but the way you select text has been updated to be easier to use, especially on touchscreen devices.  Here's how:

1. Click or tap the first word you want to select.
2. Click or tap the last word you want to select.

OK, got it!

Thanks for trying Questia!

Please continue trying out our research tools, but please note, full functionality is available only to our active members.

Your work will be lost once you leave this Web page.

For full access in an ad-free environment, sign up now for a FREE, 1-day trial.

Already a member? Log in now.