color

X chromosome

...inheritance are hemophilia (types A and B), and color blindness . There are few examples of X-linked dominant diseases; the best known in this category is vitamin D resistant rickets . The following genetic disorders are associated with the X chromosome: Alport syndrome androgen insensiti...

Xanthophyll

... that its chickens are a healthy golden yellow color because they eat marigold flowers in their feed ....

Species

...ch as those that determined consanguinity based on color (all plants with yellow flowers) or behavior (snakes, scorpions and certain biting ants). In the 18th century Carolus Linnaeus classified organisms according to differences in the form of reproductive apparatus . Although his system of classif...

Skin

...asis of skin color. See the article on human skin color for more information. Mammalian skin often contains hairs, which in sufficient density is called fur . The hair mainly serves to augment the insulation the skin provides. On some animals the skin is very hard and thick, and can be processed to...

Pigment

... biology , pigment is any material resulting in color in plant or animal cells which is the result of s...ayer structures. Unlike structural color, pigment color is the same for all viewing angles. Nearly all types of cells, such as skin , eyes , fur and h...

Photosynthesis

...ent chlorophyll , which gives them their green color . This is contained in organelles (compartments within the cells ) called chloroplasts . Although all green parts of a plant have chloroplasts, most of the energy is produced in the leaves . The cells in the interior tissues of a leaf, called...

Mendelian inheritance

...etes, ensuring variation. Figure 3 : The color alleles of Mirabilis jalapa are not dominant or recessive. (1) Parental generation. (2) F 1 generation. (3) F 2 generation. The " red " and "white" allele together make a " pink " phenotype, resulting in a 1:2:1 ratio of red : pink :white in the...

Human

..., depending on genes and environment. Human skin color can range from very dark brown to very pale pink ..., clothing , and jewelry . Hairstyles and hair color also have important cultural implications. The perception of an individual as physically beautiful ...

Homunculus

...heir name. Both are blue creatures, blue being the color of artificial creation and illusion, among other things. In the Enix RPG, Valkyrie Profile, the alchemist Lezard Valeth experiments with homonculi. Among them are his minion Bellion, and numerous female elven-like forms kept in large glass tubes. H...

Photosynthesis

...ent chlorophyll , which gives them their green color . This is contained in organelles (compartments within the cells ) called chloroplasts . Although all green parts of a plant have chloroplasts, most of the energy is produced in the leaves . The cells in the interior tissues of a leaf, called...

Eye

...ystallin Evil eye Evolution of the Eye Eye color Eye contact Eye tracking Eyeglass prescription Macropsia Micropsia Nictating membrane Ocular tremor Optometry Ophthalmology Persistence of vision Saccade Snellen chart Staring contest Tears Visual acuity ...

Drosophila

...lies of the genus Drosophila are an orange-brown color and range approximately from 3.2 mm to 4.2 mm in length. Most species have red eyes. The feathered arista is characteristic of the family. Male (left) and female fruit flies. Drosophila is part of the phylum Arthropoda , a phylu...

Diabetes mellitus

...applied to an inserted strip (see image below) and color changes caused by reaction with blood glucose are ... strip changes color. The meter then measures the color of the strip optically. It is this level that is measured and a result in either mg/dL (milligrams ...

Chromatography

...The Greek word chroma in chroma tography means color in English and refers both to Tsvet's name that is literally translated from Russian as color and to the color of the plant pigments he was separating at that time. In 1952 Archer John Port...

Chlorophyll

...t have none.) When tested with iodine solution , a color change revealing the presence of starch occurs only in regions of the leaf that were green and therefore contained chlorophyll. This shows that photosynthesis does not occur in areas where chlorophyll is absent and constitutes evidence that the prese...

Allele

...a chromosome . An example is the gene for blossom color in many species of flower - a single gene controls the color of the petals, but there may be several different versions of the gene. One version might result in ...

Albinism

...et light coming from the sun (see human skin color for more information). People with albinism lack this protective pigment in their skin, and can burn easily from exposure to the sun as a result. Lack of melanin in the eye often results in problems with vision, as the eye will not develop properly ...