Search results
Results from the WOW.Com Content Network
The dark blue, teal, and gold tapetum lucidum from the eye of a cow Retina of a mongrel dog with strong tapetal reflex. The tapetum lucidum (Latin for 'bright tapestry, coverlet'; / t ə ˈ p iː t əm ˈ l uː s ɪ d əm / tə-PEE-təm LOO-sih-dəm; pl.: tapeta lucida) [1] is a layer of tissue in the eye of many vertebrates and some other animals.
As an animal whose ancestors used to live in open terrain above the tree line, the eyesight of the mouflon is well developed. Its laterally-located eyes allow the mouflon to scan a wide arc without turning its head. In older rams, the field of view may be restricted by the position of the horn tip. As a result, rams begin to wear down these ...
Eye color is an inherited trait determined by multiple genes. [14] [15] These genes are sought by studying small changes in the genes themselves and in neighboring genes, called single-nucleotide polymorphisms or SNPs. The total number of genes that contribute to eye color is unknown, but there are a few likely candidates.
The thoughts and feelings that well up in a person's eyes are conveyed in their facial expressions and gestures, even if they are not spoken out loud. ... #9 Sheep's Eye #10 Hippo's Eye #11 Pony's ...
Originally bred in the Trøndelag region of Norway, from where the sheep derives its name, the Grey Troender are most commonly varying shades of grey in color with distinctive white "tear drop" markings under the eyes. [2] However, black, brown and white woolled Grey Troenders occasionally do occur. [2]
Another trait unique to domestic sheep as compared to wild ovines is their wide variation in color. Wild sheep are largely variations of brown hues, and variation within species is extremely limited. Colors of domestic sheep range from pure white to dark chocolate brown, and even spotted or piebald.
While color vision is dependent on many factors, discussion of the evolution of color vision is typically simplified to two factors: the breadth of the visible spectrum (which wavelengths of light can be detected), and; the dimensionality of the color gamut (e.g. dichromacy vs. tetrachromacy).
The Jezersko–Solčava sheep has black patches around the eyes, which may give it the appearance of wearing glasses. It has a markedly convex profile and is lop-eared; the lower part – from one to two thirds – of the ears is black. The lips and chin may be flecked with black; the coat is otherwise white. Both sexes are polled (hornless).