Navigation Links
The aye-ayes have it: The preservation of color vision in a creature of the night
Date:9/4/2007

A quest to gain a more complete picture of color vision evolution has led Biodesign Institute researcher Brian Verrelli to an up-close, genetic encounter with one of the worlds most rare and bizarre-looking primates.

Verrelli and his ASU team have performed the first sweeping study of color vision in the aye-aye (pronounced eye-eye), a bushy-tailed, Madagascar native primate with a unique combination of physical features including extremely large eyes and ears, and elongated fingers for reaching hard to access insects and other foods. Verrelli, lead author George Perry, and collaborator Robert Martins results, published in the journal Molecular Biology and Evolution, have led to some surprising conclusions on how this nocturnal primate may have retained color vision function.

Verrellis group focuses on color vision to better understand genetic variation between human and other primate populations and the truly big evolutionary questions as to what makes us human. At least within humans and some other primates, we know that there are three different genes responsible for color vision, said Verrelli. The genes, called opsins, come in three forms that shape our color vision palette, one for blue, another for green, and a third for red.

What makes that very interesting is that the green and red are found on the X chromosome [sex chromosome], and it is the manipulation of those two genes alone which is related to color blindness for eight to ten percent of the male population, explains Verrelli. In a 2004 study in the American Journal of Human Genetics by Verrelli and collaborator Sarah Tishkoff of the University of Maryland, they suggested that natural genetic selection has provided women with a frequent ability to better discriminate between colors than men.

These three genes may explain all the variation that we might see across human populations in color vision, said Verrelli. But how did our range of color vision variation come
'/>"/>

Contact: Joe Caspermeyer
joseph.caspermeyer@asu.edu
480-727-0369
Arizona State University
Source:Eurekalert

0

GOOD

Page: 1 2 3

Related medicine news :

1. Aloe Vera Coating For Fruits And Vegetables Preservation
2. Cryopreservation of Ovaries for Cancer patients undergoing treatment
3. Cryopreservation of embryo eggs
4. Durable Critters Provides Better Way to Human Egg Preservation
5. Detecting Colorectal Cancer
6. Gene linked to colorectal cancer identified
7. Early detection of colorectal cancer may be hindered by coloured toilet disinfectants
8. Preventing Colorectal Cancer
9. Screening Test For Early Diagnosis Of Colorectal Cancer
10. Milk Found To Lower Colorectal-Cancer Risk By 12 %
11. New Treatment Option for Colorectal Cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/19/2013)... 19, 2013 Daily Gossip reporters have subjected ... Cheat Foods That Burn Fat to a close analysis ... , The review is a detailed explanation of ... writer's recommendation. , The two nutritionists have discovered during their ... for the caloric intake and expenditure of our body, that ...
(Date:5/19/2013)... By Kathleen Doheny HealthDay Reporter , , ... supplements may help those with Crohn,s disease overcome ... the inflammatory bowel disease, according to new research. ... less physical, emotional and general fatigue, greater quality ... of daily living," said Tara Raftery, a research ...
(Date:5/19/2013)... People in Minnesota have a great option ... offering its 28 Day Fat Loss Formula. The best ... of their own home. The product sells for $135 dollars ... be accessed here: http://altmanfitness.com/28-day-fat-loss-formula/ , “Bikini season is ... now, but after using the 28 Day Fat Loss Formula ...
(Date:5/19/2013)... 19, 2013 Grinding your teeth at ... sleep, or annoying your spouse. At the same time, ... Central (“Snoring and Teeth Grinding Could Be a Sign ... grinding can be hard to prevent. Apparently, Obstructive Sleep ... one of its symptoms is a habit of teeth ...
(Date:5/19/2013)... Fat Burning Furnace developed by Rob Poulos ... with fat burning diet plans, training workouts, ... Furnace package, people will receive the Fat Burning Furnace ... The Fat Burning Furnace manual includes fat loss knowledge, ... mass. In addition, this book covers step-by-step instructions, techniques ...
Breaking Medicine News(10 mins):Health News:The "17 Cheat Foods That Burn Fat" Review and Diet Plan Secrets Revealed by Daily Gossip 2Health News:Extra Vitamin D May Ease Crohn's Symptoms, Study Finds 2Health News:Extra Vitamin D May Ease Crohn's Symptoms, Study Finds 3Health News:Dr. Kanani, Woodland Hills Dentist: Dangers of Tooth Damage and Obstructive Sleep Disorder 2Health News:Dr. Kanani, Woodland Hills Dentist: Dangers of Tooth Damage and Obstructive Sleep Disorder 3Health News:Fat Burning Diet | How “Fat Burning Furnace” Helps People Lose Their Weight Naturally And Fast – V-kool 2
... , THURSDAY, Jan. 13 (HealthDay News) -- Scientists have ... to other chickens. This achievement could stop bird ... reduce the risk of bird flu epidemics that could ... the researchers at the Universities of Cambridge and Edinburgh ...
... THURSDAY, Jan. 13 (HealthDay News) -- Trying to fight the ... on making school lunches healthier. The new guidelines, from ... such changes in 15 years and include cutting salt and ... fare. "For the first time in a generation we ...
... Scientists have for the first time sequenced and ... in the gut of a premature newborn and ... Further studies involving more infants could eventually ... problems that afflict preemies, in particular the sometimes ...
... (Garrison, NY) Extra large private hospital rooms with plenty of ... new research shows that these and other architecture and design ... reduce health care expenses. They are among the elements of ... and analyzed by leaders in health care and design. Elements ...
... Mich. Surviving cancer may also mean surviving pain, according ... showing 20 percent of cancer survivors at least two years ... study, published online ahead of print in the American Cancer ... in cancer survivorship among the growing number of U.S. cancer ...
... HealthDay Reporter , THURSDAY, Jan. 13 (HealthDay News) -- This winter ... instead is turning out to be a more typical flu season, ... to get a flu shot, advice that seniors in particular should ... their age group the hardest, the experts added. The H1N1 flu ...
Cached Medicine News:Health News:U.S. Aims to Make School Lunches Healthier 2Health News:U.S. Aims to Make School Lunches Healthier 3Health News:Scientists sequence gut microbes of premature infant 2Health News:Scientists sequence gut microbes of premature infant 3Health News:Scientists sequence gut microbes of premature infant 4Health News:Scientists sequence gut microbes of premature infant 5Health News:Next-generation hospital design can improve health -- and save money 2Health News:Cancer survivors likely to experience pain at some point in care: U-M study shows 2Health News:Flu Season Looks Normal This Year, Experts Say 2
(Date:5/19/2013)... 2013  The non-surgical Stretta® procedure ... energy is effective in control of gastroesophageal reflux ... for medication 10 years post-procedure, according to an ... Digestive Disease Week (DDW) meeting May 18-21, 2013 ... "The sustained improvement in GERD-HRQL scores ...
(Date:5/17/2013)... NEW YORK , May 17, 2013 ... of the most important ways in which mankind depends ... New York Botanical Garden,s multifaceted exhibition Wild Medicine: ... Italian Renaissance Garden, on view from May 18 ... http://photos.prnewswire.com/prnh/20130517/NY16603 ) The featured exhibition,s many attractions ...
(Date:5/17/2013)...  Orexigen® Therapeutics, Inc. (Nasdaq: OREX ) today ... UBS Global Healthcare Conference in New York ... at 11 a.m. Eastern Time. To listen to the ... the Investor Relations section of the Company,s Web site at ... days after the event. About Orexigen® Therapeutics ...
Breaking Medicine Technology:Stretta Procedure for GERD: Successful 10 Year Follow-Up Data Presented at Digestive Disease Week--Sustained Improvement, Long-Term Efficacy 2Stretta Procedure for GERD: Successful 10 Year Follow-Up Data Presented at Digestive Disease Week--Sustained Improvement, Long-Term Efficacy 3Wild Medicine On View at The New York Botanical Garden Through Sept. 8 2
... 2011 The association representing Montana,s providers of home ... in Congress to repeal the controversial Medicare "competitive" bidding ... "It is imperative that H.R. 1041 pass if ... patients and local businesses in Montana," said Mike Calcaterra, ...
... PARK, N.C., April 12, 2011 Max Neeman meets ... IV metabolic disorder trial across 1200 sites throughout India. ... multiple Phase IV studies for global sponsors with thousands ... across 1500 sites is currently in-process with four more ...
Cached Medicine Technology:Montana Medical Equipment Providers Back New Congressional Bill to Repeal Flawed Medicare Bidding Program 2Montana Medical Equipment Providers Back New Congressional Bill to Repeal Flawed Medicare Bidding Program 3Montana Medical Equipment Providers Back New Congressional Bill to Repeal Flawed Medicare Bidding Program 4Max Neeman International Completes Targeted Enrollment of 15,000 for Large Ph IV Study 2
... reference laboratory and a worldwide leader in ... an extensive test menu of highly complex ... anatomic pathology. Owned by the University of ... half of the nation's university teaching hospitals ...
... Laboratories is a national reference laboratory and ... and development. ARUP offers an extensive test ... tests in clinical and anatomic pathology. Owned ... clients include more than half of the ...
... reference laboratory and a worldwide leader in ... an extensive test menu of highly complex ... anatomic pathology. Owned by the University of ... half of the nation's university teaching hospitals ...
... a national reference laboratory and a worldwide ... ARUP offers an extensive test menu of ... clinical and anatomic pathology. Owned by the ... more than half of the nation's university ...
Medicine Products: