ADVERTISEMENT

404

Not Found

Is this what you were looking for?

tag slime mold evolution developmental biology

The Cheating Amoeba
Gad Shaulsky | Jul 1, 2008 | 10+ min read
The Cheating Amoeba Scanning electron micrograph of spore towers of the slime mold Dictyostelium discoideum. David Scharf / Photo Researchers, Inc What genes contribute to social interactions such as cheating or altruism? And what could cheating genes tell us about sociality, multicellularity, and cancer? A social soil amoeba could hold the answers. By Gad Shaulsky Related Articles Infographic: Dictyostelium Developmental Cycle Video: Social activ
Microbial Co-op in Evolution
Eugene Russo | Oct 5, 2003 | 7 min read
Courtesy of Michiel Vos, Max Planck Institute, Tübingen, Germany  FRUIT FOR THE HUNGRY: Myxococcus fruiting bodies emerge from soil particles in response to starvation. Approximately 100,000 cells aggregate and communicate via chemical signals to form the bodies, and a portion of the population differentiates into stress-resistant spores. Most microbiologists consider used flasks, laden with splotches of colonizing bacteria, simply more dishes to wash. Paul Rainey sees more. For Rai
From Simple To Complex
Jef Akst | Jan 1, 2011 | 10+ min read
The switch from single-celled organisms to ones made up of many cells has evolved independently more than two dozen times. What can this transition teach us about the origin of complex organisms such as animals and plants?
Mutants, And Their Suppliers, Are Key To Modern Research
Ricki Lewis | Sep 29, 1991 | 8 min read
Through History Mutants forged the field of genetics, starting with Gregor Mendel's short or tall, yellow or green, round or wrinkled pea plants. Since Mendel's work in the 19th century, geneticists have used white-eyed flies to demonstrate sex linkage and bread mold spore variants to study the recombination of traits that occurs during sexual reproduction. Christiane Nusslein-Volhard and Edward Lewis, two of this year's Lasker award winners, are being recognized for pioneering work in developm
science@home pandemic coronavirus covid-19 research academic crowdsourcing work from home
Opinion: Use the Pandemic to Expand the Lab to the Home
Michael Levin | Jun 30, 2020 | 5 min read
Researchers have been forced to reckon with restrictions on lab access. Now is the time to figure out how to make science portable and widely accessible.
How Cells Find Their Way
Laura Defrancesco | Sep 2, 2001 | 5 min read
Organisms need to sense their environment. By sensing, they can develop, heal wounds, protect against invaders, and create blood vessels. Chemotaxis, or directional sensing, allows cells to detect chemicals with exquisite sensitivity. Some chemotactic cells can sense chemical gradients that differ by only a few percent from a cell's front to its back. Although discovery of the molecule types involved in chemotaxis, as with other kinds of cell signaling events, has mounted, the details of how thi
From Simple To Complex
Jef Akst | Jan 1, 2011 | 10 min read
By Jef Akst From Simple To Complex The switch from single-celled organisms to ones made up of many cells has evolved independently more than two dozen times. What can this transition teach us about the origin of complex organisms such as animals and plants? Sean McCabe Given the complexity of most organisms—sophisticated embryogenesis, differentiation of multiple tissue types, intricate coordination among millions of cells—the emergence of multicel
Comparative Genomics Reveals The Interrelatedness Of Life
Ricki Lewis | Jan 4, 1998 | 7 min read
Photo: Karen Young Kreeger EXCITING ERA: TIGR's Craig Venter says efforts to unravel the information being gathered will last "into the next century." While the list of genome projects grows, research focus is shifting from structure to function. So even as automated DNA sequencers crank out bases and powerful software overlaps pieces of genomes (contigs) to establish gene orders, investigators are searching and comparing those sequences among species, an approach called comparative genomics.
Drug Makers on the Apoptotic Trail
Ted Agres | Jun 24, 2001 | 4 min read
Apoptosis, a key process in the development of embryonic tissue differentiation, later helps to regulate the normal cellular life cycle by destroying damaged cells. When something goes awry, too little apoptosis can make cancer cells resistant to chemotherapy and even death-defiant. At the other extreme, premature or excessive apoptosis has been linked to neurodegenerative diseases, such as Alzheimer's, and to nerve cell loss in strokes. Not surprisingly, many major pharmaceutical companies rec
A Peek at the Pore
Bennett Daviss(bdaviss@the-scientist.com) | Apr 24, 2005 | 6 min read
As the gateway to the nucleus, the nuclear pore complex manages hundreds of intricate cargo-handling operations every second.

Run a Search

ADVERTISEMENT