HOME >> BIOLOGY >> NEWS
Genetic studies endow mice with new color vision

Although mice, like most mammals, typically view the world with a limited color palette similar to what some people with red-green color blindness see scientists have now transformed their vision by introducing a single human gene into a mouse chromosome. The human gene codes for a light sensor that mice do not normally possess, and its insertion allowed the mice to distinguish colors as never before.

In a study published in the March 23, 2007, issue of the journal Science, Howard Hughes Medical Institute researchers at Johns Hopkins, together with researchers at the University of California at Santa Barbara, demonstrated in a series of cleverly designed color vision tests that the genetic modification allows mice to see and distinguish among a broader spectrum of light waves. The experiments were designed to determine whether the brains of the genetically altered mice could efficiently process sensory information from the new photoreceptors in their eyes. Among mammals, this more complex type of color vision has only been observed in primates, and therefore the brains of mice did not need to evolve to make these discriminations.

The new abilities of the genetically engineered mice indicate that the mammalian brain possesses a flexibility that permits a nearly instantaneous upgrade in the complexity of color vision, say the studys senior authors, Gerald Jacobs and Jeremy Nathans.

The evolution of color vision has been a topic of intensive study for more than three decades. The new research is the most definitive yet in shedding light on the first steps that led to the emergence of trichromacy -- the variety of color vision found today in most primates, including humans.

What we are looking at in these mice is the same evolutionary event that happened in one of the distant ancestors of all primates and that led ultimately to the trichromatic color vision that we now enjoy, said Nathans.

Trichromacy is dependent on three types
'"/>

Contact: Jennifer Michalowski
michalow@hhmi.org
301-215-8576
Howard Hughes Medical Institute
22-Mar-2007


Page: 1 2 3 4

Related biology news :

1. Genetic variation helps to understand predisposition to schizophrenia
2. Genetic factors strongly shape how peers are chosen
3. Genetic analysis finds greater threat in frog-killing fungus
4. Genetic diversity in honeybee colonies boosts productivity
5. 2007-2008 Genzyme/ACMGF Clinical Genetics Fellowship In Biochemical Genetics award winner announced
6. Maynard Olson receives $500,000 Gruber Genetics Prize
7. Genetic defect links respiratory disease and congenital heart disease
8. Cell Press announces new partnership with the American Society of Human Genetics
9. Genetic fellow traveler discovered in Alzheimers
10. Genetic roots of bipolar disorder revealed by first genome-wide study of illness
11. Health disparities -- Genetics, society and race play an important role in access to healthcare

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:11/12/2019)... ... November 12, 2019 , ... ... from nonprofit U.S. universities and research institutions for its Instrumentation Grant for ... up to $1.2 million per site for the acquisition of instrumentation, development and ...
(Date:11/7/2019)... (PRWEB) , ... November 07, 2019 , ... R3 Stem ... 50% off through the rest of 2019. The code to use during checkout is ... well. , R3 is the nation’s leader in regenerative therapies with over 12,000 successful ...
(Date:11/5/2019)... ... November 05, 2019 , ... Dr. Lauren Kopp ... dentistry to Seattle, WA, including porcelain veneers , smile makeovers, dental implants, ... University of Washington, Dr. Kopp is passionate about serving her Seattle community with ...
Breaking Biology News(10 mins):
(Date:11/5/2019)... ... November 05, 2019 , ... Focal Healthcare ... Mark for its Fusion Bx 2.0 prostate fusion biopsy solution. By combining information ... Bx 2.0 will give urologists across Europe the ability to perform targeted transrectal ...
(Date:11/2/2019)... ... 2019 , ... A clinical trial usually involves many different ... principal investigators, supply chain managers, manufacturers, IRT, CRAs and so on. Lack of ... data, potentially leading to patient risk. , By having a single source of ...
(Date:11/2/2019)... (PRWEB) , ... October 31, 2019 , ... ... released by pharma artificial intelligence pioneer tellic. drug360 brings tellic’s expertise in ... new tool allows researchers to quickly uncover relationships between genes, diseases, variants, phenotypes, ...
(Date:10/30/2019)... ... October 30, 2019 , ... Western University of ... innovation and technology play in educating the next generation of health care providers. ... and presentations by WesternU administrators and representatives of companies working with the University ...
Breaking Biology Technology:
Cached News: