Navigation Links
Despite their heft, many dinosaurs had surprisingly tiny genomes

dern birds.

"Our work debunks the theory that the small, repeat-poor genomes typical of birds may have co-evolved with flight as a means of conserving energy," says Edwards, professor of organismic and evolutionary biology in Harvard's Faculty of Arts and Sciences and Alexander Agassiz Professor of Zoology and curator of ornithology in Harvard's Museum of Comparative Zoology. "In fact, our work shows these streamlined genomes arose long before the first birds and flight, and can be added to the list of dinosaur traits previously thought to be found only in modern birds, including feathers, pulmonary innovations, and parental care and nesting."

Other researchers had previously determined that the sizes of various cell types, across species, tend to reflect the size of an organism's genome. Analyzing 26 living species, Organ and Edwards are the first to show that the same applies to the bone cells called osteocytes.

These cells reside in individual lacunae, small pockets inside bone tissue. This uniquely durable cellular housing allowed the scientists to look back in time at the size of 31 extinct species' genomes: By measuring lacunae in dinosaur and extinct bird specimens housed at Harvard's Museum of Comparative Zoology and at the Museum of the Rockies in Bozeman, Mont., they were able to determine just how big the various extinct species' osteocytes had been.

"These fossils let us sample species through evolutionary time," Edwards says, "providing genomic information that's often unavailable for long-extinct ancestors."


'"/>

Source:Harvard University


Page: 1 2

Related biology news :

1. Despite acidity, orange juice could still be a source of foodborne disease
2. Priming embryonic stem cells to fulfill their promise
3. Protein offers way to stop microscopic parasites in their tracks
4. Flocking together: Study shows how animal groups find their way
5. Where bacteria get their genes
6. Chickadees can help humans get their bearings
7. Bacteria use hosts immune response to their competitive advantage
8. Structures of marine toxins provide insight into their effectiveness as cancer drugs
9. Beauty queens urge girls not to sacrifice their bones
10. Researchers learn how blood vessel cells cope with their pressure-packed job
11. Stem cells electric abilities might help their safe clinical use
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Despite their heft many dinosaurs had surprisingly tiny genomes

(Date:4/27/2015)... more than four decades, AUVSI,s Unmanned Systems ... event for the unmanned land, sea, and air industries. ... local, national, or trade news organization interested in gathering ... applications of unmanned technologies. The conference will explore the ... and how it will soon impact the lives of ...
(Date:4/27/2015)... Profile Solutions, Inc. (OTC: PSIQ), a leading ... pleased to announce that Dr Gerry Bedore ... of its scientific advisory board. ... leader in technology-enhanced learning models. He was a co-founder ... studies and books focused on online student success and ...
(Date:4/20/2015)... 20, 2015 Huntington Memorial Hospital is the ... a new miniaturized, wireless monitoring sensor to manage heart ... and only FDA-approved heart failure monitoring device that has ... by physicians to manage heart failure. The ... in the pulmonary artery (PA) during a non-surgical procedure ...
Breaking Biology News(10 mins):UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 2UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 3UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 4UNMANNED SYSTEMS 2015: Largest International Conference and Trade Show for the Drone and Unmanned Technology Industry 5Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 2Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 3Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 4Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 2Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 3
... which are so tiny that 30 can fit across the width ... among the key organisms taking the greenhouse gas carbon dioxide out ... heavy that when they die in the oceans they typically sink ... surface waters and locking it into sediments below. This week ...
... the Chicxulub crater, a mostly submerged and buried impact crater ... extinction of 70 percent of life on Earth 65 million ... asteroid struck on the coast of the Yucatan Peninsula. Most ... KT Extinction Event that caused the extinction of most life ...
... WASHINGTON, Jan. 22 The U.S. Department ... has begun collecting,additional fingerprints from international visitors ... change is part of the department,s,upgrade from ... and,facilitate legitimate travel by more accurately and ...
Cached Biology News:Ecologists, material scientists pursue genetics of diatom's elegant, etched casing 2Ecologists, material scientists pursue genetics of diatom's elegant, etched casing 3Seismic images show dinosaur-killing meteor made bigger splash 2DHS Begins Collecting 10 Fingerprints From International Visitors at Boston Logan International Airport 2
(Date:5/5/2015)... DUBLIN , May 05, 2015 Research ... announced the addition of the "Clinical Laboratory, ... and Forecasts 2015 to 2019 - Europe Version" ... technical developments especially in the area of molecular ... dynamic, growing and evolving world market that is ...
(Date:5/5/2015)... 5, 2015   Tocagen Inc. , a ... R. Parkinson , M.D., a venture partner at ... the board of directors of Tocagen. Dr. Parkinson ... oncology clinical development, including leading clinical activities at ... of the cancer therapeutics Gleevec®, Femara®, Zometa®, Kepivance® ...
(Date:5/5/2015)... May 5, 2015  Indianapolis-based medical device manufacturer ... innovative line of products including the BrainPath® and ... accessing deep-seated brain abnormalities and then removing affected ... at more than 50 institutions throughout ... also been included in 12 abstracts, three peer-reviewed ...
(Date:5/4/2015)... Many of us take a healthy ... with rare, inherited mutations of certain genes, severe ... impaired immune responses. Now, researchers at ... role for calcium signaling in immune responses to ... causing tuberculosis (TB). Specifically, they ...
Breaking Biology Technology:European Clinical Laboratory, Molecular Diagnostics and Genomic Testing Services Market 2015-2019 2Tocagen Appoints David R. Parkinson, M.D., to the Board of Directors 2Tocagen Appoints David R. Parkinson, M.D., to the Board of Directors 3Tocagen Appoints David R. Parkinson, M.D., to the Board of Directors 4NICO Corporation Gains Market Expansion after Multiple Published Clinical Articles Support Access Technology for Deep Brain Lesions 2NICO Corporation Gains Market Expansion after Multiple Published Clinical Articles Support Access Technology for Deep Brain Lesions 3Researchers Discover A Novel And Unexpected Role For Calcium In Controlling Inflammation During Chronic Lung Infection 2Researchers Discover A Novel And Unexpected Role For Calcium In Controlling Inflammation During Chronic Lung Infection 3
... 18 Germany is on the,cutting edge in biotechnology ... production. Companies located in Germany are poised to,profit from ... an expert panel, at the BIO International Convention (BIO ... Germany co-chaired the,panel along with the CEO of a ...
... 18 Inverness Medical,Innovations, Inc. (Amex: IMA ... products for the consumer and professional markets, today,announced ... Russell, Vice,President, Finance, will attend the Jefferies 2nd ... York. Inverness, presentation is,scheduled for Wednesday, June 25 ...
... Synovics,Pharmaceuticals, Inc. (OTC Bulletin Board: SYVC), a ... subsidiary,Kirk Pharmaceuticals, LLC (Kirk) during the past year ... list of clients that includes Target,Walgreens, Family Dollar, ... these retailers are all over-the-counter (OTC) private label ...
Cached Biology Technology:BIO 2008: Germany on Cutting Edge in Biomanufacturing 2Inverness Medical Innovations to Present at Jefferies 2nd Annual Healthcare Conference held on June 25, 2008 2Synovics Pharmaceuticals Announces Continued Growth of Customer Relationships 2Synovics Pharmaceuticals Announces Continued Growth of Customer Relationships 3Synovics Pharmaceuticals Announces Continued Growth of Customer Relationships 4Synovics Pharmaceuticals Announces Continued Growth of Customer Relationships 5
... DH-2000, but comes with a shutter (controlled via ... Hz) The DH-2000 Deuterium Tungsten ... deuterium and tungsten halogen light sources in a ... a powerful, stable output from 215-200 nm. In ...
... Note: Agglutination activity is expressed in g per ... phosphate buffered saline, pH 6.8, of a 1 ... is the lowest concentration to agglutinate a 2% ... 1 hour incubation at 25 C. ...
... The MSD Security ... integrated GC/MS software application ... processing, quantification, library searching ... the aspects of data ...
... These handy dispensers save space ... wipers, hats, and other garb. ... storage bins for small parts ... manufacturing. Clear acrylic. Open-slot design ...
Biology Products: