Melanin Human adaptation
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Melanin (/ˈmɛlənɪn/ ; from Ancient Greek μέλας (mélas) 'black, dark') is a family of biomolecules organized as oligomers or polymers, which among other...
color of different humans is affected by many substances, although the single most important substance is the pigment melanin. Melanin is produced within...- In biology, adaptation has three related meanings. Firstly, it is the dynamic evolutionary process of natural selection that fits organisms to their environment...
Freckle (category Human skin color)an increased number of the melanin-producing cells, or melanocytes, but instead have melanocytes that overproduce melanin granules (melanosomes) changing...- Recent human evolution refers to evolutionary adaptation, sexual and natural selection, and genetic drift within Homo sapiens populations, since their...
Bajau. Human hair ranges in color from red to blond to brown to black, which is the most frequent. Hair color depends on the amount of melanin, with concentrations...
Hair (redirect from Human hair)The cortex contains melanin, which colors the fiber based on the number, distribution and types of melanin granules. The melanin may be evenly spaced...
Poliosis (category Human hair color)Poliosis (also called poliosis circumscripta) is the decrease or absence of melanin (or colour) in head hair, eyebrows, eyelashes, or any other hirsute area...
Radiotrophic fungus (category Fungi by adaptation)Plant. Most radiotrophic fungi use melanin in some capacity to survive. The process of using radiation and melanin for energy has been termed radiosynthesis...
Dopamine (redirect from Dopamine-melanin)of melanin, known as dopamine-melanin, that can be synthesized by oxidation of dopamine via the enzyme tyrosinase. The melanin that darkens human skin...
Dark skin (category Human skin color)Dark skin is a type of human skin color that is rich in melanin pigments. People with dark skin are often referred to as "black people", although this...
Melanism (section Adaptation)in skin, so lighter colored skin – less melanin – is an adaptation related to the prehistoric movement of humans away from equatorial regions, as there...
oxidation of the compound causes it to polymerize into brown or black melanin compounds. Several small-scale studies (involving 15 or fewer test subjects)...
Chromatophore (section Background adaptation)background adaptation process is vision-dependent (it appears the animal needs to be able to see the environment to adapt to it), and that melanin translocation...- cases where two or more clines are distributed discordantly – for example, melanin is distributed in a decreasing pattern from the equator north and south;...
Light skin (category Human skin color)Light skin is a human skin color that has a low level of eumelanin pigmentation as an adaptation to environments of low UV radiation. Light skin is most...
Olm (redirect from Human fish)color. The white skin color of the olm retains the ability to produce melanin, and will gradually turn dark when exposed to light; in some cases the...
more pronounced in humans and animals with albinism. All forms of albinism involve abnormal production and/or deposition of melanin. Red-eye effect is...
of melanin help mitigate the susceptibility to disease in sub-Saharan Africa. According to this argument, the anti-infective qualities of melanin were...
Melanocortin 1 receptor (category Genes on human chromosome 16)(MC1R), also known as melanocyte-stimulating hormone receptor (MSHR), melanin-activating peptide receptor, or melanotropin receptor, is a G protein–coupled...
- something of a cross between yellow and red. Melanin is a coloring substance which is found in the skins of all human beings. It is the original Andonic skin
- spelled Blonde also known as fair hair, is a human hair colour caused by low levels of the dark pigment melanin. The hue varies, but always has yellowish
- amounts of time; biological adaptation to differing climates. Although much of this physical variation can still be seen in human populations today, the increasing