Share on Google Plus Share on Twitter Share on Facebook Share on LinkedIn Share on PInterest Share on Fark! Share on Reddit Share on StumbleUpon Tell A Friend 2 (2 Shares)  
Printer Friendly Page Save As Favorite View Favorites (# of views)   7 comments

Exclusive to OpEdNews:
Sci Tech

Molecular Biology Trumps Darwin

By   Follow Me on Twitter     Message Jeffrey Dach     Permalink
      (Page 1 of 2 pages)
Related Topic(s): ; ; ; ; ; ; ; ; ; , Add Tags Add to My Group(s)

Funny 1  
View Ratings | Rate It

opednews.com

Author 30652
Become a Fan
  (13 fans)
- Advertisement -

Is Evolution Predictable?

To celebrate Darwin's Birthday, Science Magazine ran a special devoted to evolution.  An article by Stern and Orgogozo  entitled "Is Genetic Evolution Predictable" presented a stunning break from neo-Darwinism.  The authors presented a convincing refutation of the  "Blind Watch Maker" argument of Richard Dawkins.  Quite the contrary,  it would appear the "Watchmaker" had his eyes wide open.

Molecular Biology Trumps Darwin

The authors, Stern and Orgogozo,  found that mutations cluster around certain “hot-spot genes,” also called regulatory genes, making evolution somewhat predictable.    The authors were able to predict genome response to environmental stress.  The most compelling case for this comes from parallel genetic evolution.   They cite a number of examples of similar genome changes in different species in response to environmental stress.

"Although mutations are thought to ocurr randomly in the genome, the distribution of mutations that cause biologic diversity appears to be highly non-random."

"Is genetic evolution predictable? Evolutionary developmental biologists have argued that, at least for morphological traits, the answer is a resounding yes. "

You can read Stern's earlier paper here.

References

http://www.molbio.princeton.edu/index.php?option=content&task=view&id=239
David L. Stern PhD

- Advertisement -

Evolutionary developmental biology

Our research addresses biological problems arising at the interface of evolution and development. How does development evolve on a short time scale, within and between closely related species, to generate phenotypic variation? What are the genetic mechanisms regulating polyphenisms and other dramatic life-history switches? We address these questions using genetic, molecular and developmental techniques. For studying the problem of variation we primarily work with the fruit fly Drosophila melanogaster and closely related species. We study polyphenisms in the pea aphid (Acyrthosiphon pisum).

We found that evolution at the Ubx locus contributes to a difference in this trait between Drosophila melanogaster and D. simulans and this difference appears to be due to evolution of cis-regulatory DNA. This is the first experimental demonstration that evolution of Hox gene patterning is responsible for an interspecific morphological difference.

This is the first experimental demonstration that evolution of Hox gene patterning is responsible for an interspecific morphological difference.

http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pubmed&pubmedid=18616572

- Advertisement -


Evolution. 2008 September; 62(9): 2155–2177.
Society for the Study of Evolution.

The Loci of Evolution: How Predictable is Genetic Evolution?
David L Stern and Virginie Orgogozo

We also found that different spectra of evolutionarily relevant mutations segregate within populations and between species. Interspecific differences in morphology seem to be more often caused by cis-regulatory changes than intraspecific variation.

Next Page  1  |  2

 

- Advertisement -

Funny 1  
View Ratings | Rate It

http://jeffreydachmd.com
Jeffrey Dach MD is a physician and author of two books, Natural Medicine 101, and Bioidentical Hormones 101, both available on Amazon, or as a free e-book on his web sites. Dr. Dach is founder and chief medical officer of TrueMedMD, a clinic in (more...)
 

Share on Google Plus Submit to Twitter Add this Page to Facebook! Share on LinkedIn Pin It! Add this Page to Fark! Submit to Reddit Submit to Stumble Upon


Go To Commenting

The views expressed in this article are the sole responsibility of the author and do not necessarily reflect those of this website or its editors.

Follow Me on Twitter

Contact AuthorContact Author Contact EditorContact Editor Author PageView Authors' Articles
- Advertisement -

Most Popular Articles by this Author:     (View All Most Popular Articles by this Author)

Failed Hatchet Job on Larry King, Suzanne Somers, Knockout

Bioidentical Hormones on Oprah, Are They Safe?

Why Natural Thyroid is Better than Synthetic

Wheatgrass, Natural Medicine in the Kitchen

Fish Oil Increases Risk for Prostate Cancer, New Study?

Spontaneous Remission Cancer Breakthrough