Nearly all surface-dwelling members have pigmented eyes, but these are usually reduced or totally lost in underground and deep-sea species.
Some feathers are pigmented.
Skin types range from very little pigment (type 1) to very darkly pigmented (type 6).
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"The possibility that Taqpep might be involved in pigment was totally off anyone's radar," says geneticist Sheila Schmutz of the University of Saskatchewan in Saskatoon, Canada.
These projections were visible at stripe edges but could not be discerned clearly within the interior of black stripes, because the region is totally filled with black pigment.
Altough its structure is not totally clear, NM seems to be similar to the skin pigment melanin [ 165].
We are all, with our modern lifestyles, totally hooked on chemicals, whether for energy (petrochemicals), colourants (paints, inks, dyes, pigments), food production (fertilisers, pesticides), health (medicines, soaps, detergents) or beauty (perfumes, cosmetics).
Cyanobacteria (blue-green algae) are thought to have been the next evolutionary step in that they used photosynthetic pigments to manufacture their own food supply and therefore were not totally dependent on their environment for nutrients.
Not all coloration requires pigments.
