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Chlorophyll is the primary pigment in plants; it is a chlorin that absorbs blue and red wavelengths of light while reflecting a majority of green. It is the presence and relative abundance of chlorophyll that gives plants their green color. All land plants and green algae possess two forms of this pigment: chlorophyll a and chlorophyll b.
For example, the bright yellow of an American goldfinch, the startling orange of a juvenile red-spotted newt, the deep red of a cardinal and the pink of a flamingo are all produced by carotenoid pigments synthesized by plants. In the case of the flamingo, the bird eats pink shrimps, which are themselves unable to synthesize carotenoids.
Darker colors absorb more light, and lighter colors reflect more. Eye color is determined by a few different genetic factors, the most important being OCA2. OCA2 produced melanocytes, or melanin ...
A melanistic European adder (Vipera berus) compared to a normal-colored adder. Melanism related to the process of adaptation is called adaptive. Most commonly, dark individuals become fitter to survive and reproduce in their environment as they are better camouflaged.
Central heterochromia is also an eye condition where there are two colors in the same iris; but the arrangement is concentric, rather than sectoral. The central (pupillary) zone of the iris is a different color than the mid-peripheral (ciliary) zone. Central heterochromia is more noticeable in irises containing low amounts of melanin. [32]
Plants that are pale simply from being in the dark are termed etiolated. Albino redwoods are rare examples of an albino tree with white needles; despite its lack of chlorophyll, it may grow to substantial size as a parasite , usually on the base of the (normal) redwood tree from which it first grew.
The rapid shift from light to dark causes a drastic shift in the way our eyes view colors, something that typically happens gradually. The Purkinje effect will abruptly cause red shades to look ...
Millions Of People Take Biotin For Hair Growth, And Many Are Unaware Of This Dangerous Side Effect. Brian Underwood, Sabrina Talbert. December 11, 2024 at 6:00 AM.