Navigation Links
Evolution is deterministic, not random, biologists conclude from multi-species study
Date:11/19/2007

A multi-national team of biologists has concluded that developmental evolution is deterministic and orderly, rather than random, based on a study of different species of roundworms. The findings are reported in the latest issue of the journal Current Biology.

The leading author is Karin Kiontke, a post-doctoral fellow in New York Universitys Department of Biology. The research team included NYU Biology Professor David Fitch as well as researchers from the University of Paris, the Israel Institute of Technology, and the Max-Planck Institute for Developmental Biology in Germany.

The researchers were interested in how development evolves in organs which themselves do not change. To do so, they examined the vulvathe female's copulatory and egg-laying organin nearly 50 species of roundworms. Because the vulva does not significantly change across species, one might predict that there would be little variation in vulva development. However, the researchers found an astonishing amount of developmental variation. They then reasoned that this variation, since it did not affect the final adult vulva, should have evolved in a stochastic, or random, fashion.

In executing the study, the research team analyzed more than 40 characteristics of vulva development, including cell death, cell division patterns, and related aspects of gonad development. They plotted the evolution of these traits on a new phylogenetic tree, which illustrates how species are related to one another and provides a map as to how evolutionary changes are occurring.

Their results showed an even greater number of evolutionary changes in vulva development than the researchers had expected. In addition, they found that evolutionary changes among these species were unidirectional in nearly all instances. For example, they concluded that the number of cell divisions needed in vulva development declined over timeinstead of randomly increasing and decreasing. In addition, the
'/>"/>

Contact: James Devitt
james.devitt@nyu.edu
212-998-6808
New York University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Evolution is driven by gene regulation
2. Clones on task serve greater good, evolutionary study shows
3. Adaptation to parasites drive African fishes along different evolutionary paths
4. Uncertainty drives the evolution of cooperative breeding in birds
5. Structure of 450 million year old protein reveals evolutions steps
6. Scientists retrace evolution with first atomic structure of an ancient protein
7. Hidden interactions between predators and prey: evolution causes cryptic dynamics in ecology
8. Migrating squid drove evolution of sonar in whales and dolphins, researchers argue
9. Old developmental pathways spawn revolutionary evolutionary changes
10. Systems Biology poised to revolutionize the understanding of cell function and disease
11. Using evolution, UW team creates a template for many new therapeutic agents
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/18/2014)... The ability to acquire and creatively manipulate spoken language ... over the past 6 million years of human evolution ... is the best candidate gene we now have," says ... LMU. In his efforts to understand the molecular biological ... step forward. The results of his latest study, undertaken ...
(Date:9/18/2014)... have built the first smartphone app that automatically ... trends. In other words, your smartphone knows your ... -- and how that affects you. , The ... and loneliness to their academic performance, also may ... example, to monitor mental health, trigger intervention and ...
(Date:9/18/2014)... Va.Sept. 18, 2014Many Americans across racial and ethnic ... greatest impact on their day-to-day life, more so ... hearing and speech (57% of African-Americans, 49% of ... Hispanics). When asked which disease or ailment is ... ranked first among African-Americans followed by AIDS/HIV. ...
Breaking Biology News(10 mins):Language evolution: Quicker on the uptake 2Language evolution: Quicker on the uptake 3New Dartmouth smartphone app reveals users' mental health, performance, behavior 2New Dartmouth smartphone app reveals users' mental health, performance, behavior 3New Dartmouth smartphone app reveals users' mental health, performance, behavior 4Americans rate losing eyesight as having greatest impact on their lives 2Americans rate losing eyesight as having greatest impact on their lives 3
... the world go ,round they comprise most of the Earth,s ... that keep the planet, and life in and on it, going. ... is the carbon cycle, which is currently unbalanced. Humans release more ... Deal with Carbon: How Earth,s Mighty Microbes Respond," is a free ...
... May 6, 2011 Cancer researchers at UT Southwestern ... telomerase enzyme, which is linked to the disease,s growth. ... demonstrate that telomerase repairs chromosomes in one of two ways ... if the cell is under stress from enzyme inhibition ...
... Scientists have known for years that seizures in patients ... they did not know was why this was happening. ... by Professor Wilma Friedman of the Department of Biological Sciences ... a recently awarded, four-year, $2 million grant from the National ...
Cached Biology News:UT Southwestern research reveals how cancer-driving enzyme works 2Following trail of cell death in epilepsy patients to find ways to preserve brain health 2
(Date:9/19/2014)... Paul, Minnesota (PRWEB) September 19, 2014 ... from related food industries will gather October 5–8, ... at the Rhode Island Convention Center in Providence, ... will feature the work of food scientists, chemists, ... quality control, and food production management. To date, ...
(Date:9/18/2014)... HealthTronics, Inc ., a ... products and services, announced that a poster related ... versus external beam radiotherapy (EBRT) is being presented ... Association (MAAUA) Annual Meeting in Baltimore, Maryland September ... Cryosurgery and External Beam Radiation as Treatments for ...
(Date:9/18/2014)... September 18, 2014 ... http://www.researchandmarkets.com/research/czvg3s/biocompatible ) has announced the addition ... Global Strategic Business Report" report ... ,This report analyzes the worldwide markets ... by the following Product Segments: Polymeric ...
(Date:9/18/2014)... 2014 Research and Markets has ... Industry Report 2014" report to their offering. ... is a professional and in-depth study on the current ... The report provides a basic overview of the industry ... human albumin market analysis is provided for the international ...
Breaking Biology Technology:Latest Research on Cereal Grain Quality, Health Benefits and Food Production to be Presented During the AACC International Annual Meeting 2Latest Research on Cereal Grain Quality, Health Benefits and Food Production to be Presented During the AACC International Annual Meeting 3HealthTronics Announces Data Comparing Cryotherapy Versus Radiation for Treating Prostate Cancer Poster Presented at the American Urological Association Regional Meeting 2Biocompatible Materials - Global Strategic Business Report 2014 2Biocompatible Materials - Global Strategic Business Report 2014 3Global Human Albumin Industry Report 2014 2Global Human Albumin Industry Report 2014 3
... , SAN DIEGO, Sept. 22 ... services, introduces the TurboLink Conjugation Catalyst, making conjugation at least ... antibodies, oligos, peptides and proteins. , , ... have traded conjugation speed for poor yields, poor quality and ...
... , ... Opportunities as Other Sectors Struggle , ... Minneapolis (Vocus) – Medical real estate continues to be one of the bright spots ... the most recent edition of the Healthcare Real Estate Insights (HREI) newsletter., , , , ...
... ... an oncology contract research organization in the US and Europe, is ... Inder Makin, M.D., Ph.D., who joins the company as Vice President, ... throughout the product life cycle including early design and prototyping, simulation, ...
Cached Biology Technology:SoluLinK Introduces Product that Links All Biomolecules Greater Than 20 Times Faster with 100% Yields 2Deals keep Coming in Medical real Estate 2Medelis Expands CRO Services to Medical Devices, Appoints Dr. Inder Makin as VP 2Medelis Expands CRO Services to Medical Devices, Appoints Dr. Inder Makin as VP 3
...
Anti-Human Factor XI Purified (Polyclonal) (sheep IgG)...
Rabbit polyclonal to Wilms Tumor Protein ( Abpromise for all tested applications). entrezGeneID: 7490 SwissProtID: P19544...
Goat polyclonal to Dysadherin ( Abpromise for all tested applications). entrezGeneID: 53827...
Biology Products: