Recent research ( Irestedt " et al . " 2002, Rice 2005a, b ) indicates that the Formicariidae as previously delimited are highly paraphyletic, judging from comparison of several sexually dichromatic.
42.
The most complex color vision system in the animal kingdom has been found in stomatopods ( such as the mantis shrimp ) with up to 12 spectral receptor types thought to work as multiple dichromatic units.
43.
The dichromatic polynomial does not generalize to matroids because " k " ( " A " ) is not a matroid property : different graphs with the same matroid can have different numbers of connected components.
44.
The majority of toucans do not show any sexual dimorphism in their coloration, the genus " Selenidera " being the most notable exception to this rule ( hence their common name, " dichromatic toucanets " ).
45.
"There wasn't any magic, " said Christie, whose black-and-cream-striped pant suit identically matches the dichromatic color scheme of the living room in their home in the Hollywood Hills.
46.
Dichromatic vision may improve an animal's ability to distinguish colours in dim light; the basically nocturnal nature of mammals, therefore, may have led to the evolution of dichromacy as the basal mode of vision in placental animals.
47.
In September 2009, the journal " Nature " reported that researchers at the University of Washington and University of Florida were able to give trichromatic vision to squirrel monkeys, which normally have only dichromatic vision, using gene therapy.
48.
Eutherian mammals other than primates ( for example, dogs, mammalian farm animals ) generally have less-effective two-receptor ( dichromatic ) color perception systems, which distinguish blue, green, and yellow but cannot distinguish oranges and reds.
49.
Studies based on the mitochondrial DNA 12S gene fragment suggested that other sexually dichromatic species, the gang-gang cockatoo as well as the cockatiel may be the closest living relatives of " Calyptorhynchus " ( Brown & Toft, 1999 ).
50.
Thus in 1854 he lectured at the Royal Institution on " Chromatic Phenomena exhibited by Transmitted Light . " In 1855 there were " Notes on some substances which exhibit the Phenomena of Fluorescence ", and in 1856 on " Some Dichromatic Phenomena among Solutions ".
