Questions tagged [pigmentation]

Pigmentation refers to the coloration in plants or animals due to the presence of pigment in the tissue.

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What is the biggest structure in nature for structural coloration?

I'm interested in the actual sizes behind structural coloration: I find it fascinating and I think it may have a couple very nice applications. The problem is I couldn't find anything but vague ...
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Photosynthetic Absorption Spectrum - Pigment vs. Absorption Spectrum

This is a very confusing question to me that came up while I was studying photosynthesis. Halobacterium has a photosynthetic membrane that is colored purple. Its photosynthetic action spectrum is ...
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What's behind the amazing colour combinations in pests & insects?

What's behind the amazing colour combinations in pests & insects ? Do this colour combination signals any character/ poison of the pest/insect ?
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Why are there sporadic lightly pigmented hairs in facial hair?

My body and scalp hair are entirely black. Until recently, I thought this was the case with my facial hair also, until I noticed a small handful of hairs that were anywhere from light brown to copper-...
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Why do earthworms have so little colour?

Earthworms (or at least the ones that I have seen) tend to be pinkish, but with the front dorsal region being a camoflagued brown. Why is this the case, rather than the entire body or back being ...
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Do supplements that increase pheomelanin change hair color?

People take supplements and ivs with things like vitamin c, glutathione and msm that, over months, results in lighter skin color. This has been explained by the supplements increasing pheomelanin and ...
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Has human skin pigmentation adaptation and evolution ceased?

Before asking this question read Why human skin colour disprove natural selection? Does darker skin color make it easier to live under sun? though neither posed the same question or provide the ...
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How can myoglobin be responsible for the red color of meat if it is located in the cytoplasm?

How can myoglobin be responsible for the red color of meat if it is located in the cytoplasm, as the visible part of muscle cells is the membrane (at least as I believe)? Sources: https://en....