The gene loci coding for the photopigments : M-opsin and L-opsin are located in close proximity within the X chromosome and are highly polymorphic.
32.
Deletion of only one photopigment does not eliminate the organism s ability to entrain to environmental light-dark cycles, but it does reduce the intensity of the response.
33.
The photopigment of photoreceptive ganglion cells, melanopsin, is excited by light mainly in the blue portion of the visible spectrum ( absorption peaks at ~ 480 nanometers ).
34.
Since thylakoids are contained within chloroplasts, antheraxanthin and other photopigments are in their highest concentrations in the leaves of plants under high solar radiation or light / heat exposure.
35.
However, since rod cells make up most of the retina, what Wald and his colleagues were specifically measuring was the absorbance of rhodopsin, the main photopigment in rods.
36.
Jacobs et al . published their research in the journal : " Science " in 2007, on their work introducing a human L-cone photopigment in mice.
37.
The photopigment of the retinal photosensitive ganglion cells, melanopsin, is excited by light mainly in the blue portion of the visible spectrum ( absorption peaks at ~ 480 nanometers ).
38.
Currently ( 2012 ), Czeisler is examining the effects of light timing, duration, intensity, and wavelength on resetting the pacemaker through ipRGCs, which contain the photopigment melanopsin.
39.
The opsins ( photopigments ) present in the L and M cones are encoded on the X chromosome; defective encoding of these leads to the two most common forms of color blindness.
40.
"When all wavelengths stimulate the retinal region adapted to green light, the M and L cones contribute less to the resulting percept because their photopigments absorb less light than the S cones.
