HOME >> BIOLOGY >> NEWS
PNAS highlights for the week of May 16 - 20

veins with alternating strong and weak adherence properties. Adhesion dropped when the separation between the veins bonding the aspartate became so small that the leucine segments no longer fit between the veins.

The researchers suggest this precise spatial control of amino acids on inorganic surfaces could have many technological applications.

Tracing the Rise of Ants

In a perspective article, Edward O. Wilson and Bert Hlldobler explore the evolutionary history of ants, tracing their waves of expansion from the first appearance more than 100 million years ago.

Over the past two decades, fossil discoveries combined with studies of anatomy, behavior, and DNA have helped clarify the phylogeny of ants, the authors say. Yet some puzzles remain, such as how the important and ancient subfamily Ponerinae spread so widely while retaining relatively primitive social organization--a question the authors term "the ponerine paradox."

A full explanation will require further discoveries in paleontology and ecology, the authors note. Until then, Wilson and Hlldobler offer a combined phylogenetic and ecological "dynastic-succession" hypothesis that ties together existing knowledge.

Key events in this history include an initial adaptation to forest ground litter and soil coincident with a surge in flowering plants, then an advance to ecological dominance in tropical forests, and finally a broad expansion up into trees and outward into drier environments.

Fish Genitalia May Balance Attractiveness with Predatory Escape

Male genital size in some fish species may be driven by competing evolutionary mechanisms, reflecting a tradeoff between the capacity to attract mates and the ability to quickly evade predators, researchers report.

Diversity of male genitalia size in animals with internal fertilization has intrigued scientists. Most evolutionary explanations have centered on postmating sexual selection,
'"/>

Contact: Leikny Johnson
PNASNews@nas.edu
202-334-1310
Proceedings of the National Academy of Sciences (PNAS)
16-May-2005


Page: 1 2 3 4 5 6

Related biology news :

1. Other highlights in the Aug. 7 JNCI
2. Other highlights in the July 24 JNCI
3. Other highlights from the July 10 JNCI
4. Other highlights in JNCI, June 26
5. Other highlights in JNCI, June 12
6. Other highlights from the June 6 JNCI
7. Other highlights in the May 16 JNCI
8. InfoSNM highlights advances in computer, information sciences for molecular imaging
9. Landmark study highlights complex genetic risk factors behind type 2 diabetes
10. Other highlights from the April 18 Journal of the National Cancer Institute
11. Cold Spring Harbor Protocols highlights reliable methods for gene and protein analyses

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: PNAS highlights for the week May

(Date:3/2/2015)... , March 2, 2015  Businesses have ... Data protection company Tharon Rankins Enterprises has announced ... provides an ultra-safe way for businesses to protect ... financial transactions. Beconux is a ... Rankins Enterprises. Functioning similarly to an ATM machine, ...
(Date:2/24/2015)... -- This report analyzes the worldwide markets for Iris Biometrics ... the US, Canada , Japan ... , Middle East , and ... provided for the period 2013 through 2020. Also, a seven-year ... analytics are derived from primary and secondary research. Company profiles ...
(Date:2/23/2015)... 2015 NXT-ID, Inc. (NASDAQ: NXTD ... authentication company focused on the growing mobile commerce market, ... for DISTRIBUTED VOICE DIRECTED PAYMENT METHOD AND ... new groundbreaking payment method. Payment accounts may be selected ... be accessed if both the speech (the word associated ...
Breaking Biology News(10 mins):Personal Data Protection Company Launches New Product 2World Iris Biometrics Industry 2World Iris Biometrics Industry 3World Iris Biometrics Industry 4World Iris Biometrics Industry 5World Iris Biometrics Industry 6World Iris Biometrics Industry 7World Iris Biometrics Industry 8World Iris Biometrics Industry 9World Iris Biometrics Industry 10World Iris Biometrics Industry 11NXT-ID Patents Voice Directed Payments 2NXT-ID Patents Voice Directed Payments 3
(Date:3/3/2015)... March 3, 2015 Adaptive Biotechnologies announced today ... joining its Board of Director as Chair of the ... Zillow Group, Chad oversees all finance, treasury and accounting ... company,s core finance, treasury and accounting functions, and led ... acquisitions. In 2013, he was named Puget Sound Business ...
(Date:3/3/2015)... YORK , March 3, 2015 Fried, ... Jeffrey I.D. Lewis has joined the Firm ... resident in the New York ... handles trademark matters, as well as other intellectual property ... patent attorney, Mr. Lewis represents both plaintiffs and defendants ...
(Date:3/3/2015)... 3, 2015  Thingee Corporation, a software development company ... presentation entitled, "Technology Adoption: Making Reps, Lives Easier" during ... and Technology ,  in Deerfield Beach, Florida ... 2015. Audiences looking to learn how technology can help ... be in the audience for the Thingee presentation. ...
(Date:3/3/2015)... Liberty Corner, New Jersey (PRWEB) March 03, 2015 ... in NJ, has announced today that it has ... DE. Terms of the transaction were not ... engineering consulting services to the energy sector including ... gas, alternative energy, and fossil and nuclear power ...
Breaking Biology Technology:Adaptive Biotechnologies adds Chad Cohen, Zillow Group CFO, to Board of Directors 2Leading Patent Attorney Jeffrey Lewis Joins Fried Frank's Intellectual Property Litigation Practice 2Leading Patent Attorney Jeffrey Lewis Joins Fried Frank's Intellectual Property Litigation Practice 3Thingee to present at 11th Annual Synergistix Users Conference 2
Cached News: