Find out: 1  the documents you need. 2  the common errors to watch for. 3  the consequences of filing an EITC return with an error. 4  how to get help preparing your return. 5  what you need to do if your EITC was denied in a previous year. 6  how to claim the credit for earlier tax years.
Biological pigment. The budgerigar gets its yellow color from a psittacofulvin pigment and its green color from a combination of the same yellow pigment and blue structural color. The blue and white bird in the background lacks the yellow pigment. The dark markings on both birds are due to the black pigment eumelanin.
Variation in genes and skin color. One gene responsible for the production of melanin pigment is SLC24A5. It is found that there are two variations of SLC24A5: 1) One variation is with the amino acid called threonine, which is responsible for the light color of the skin.he pigment that gives color to your skin is melanin. It is also responsible for the color of your eyes. Melanin protects our skin from harmful ultraviolet radiation of the sun by absorbing the rays. More melanin pigment is produced by people with dark skin as compared to light skinned persons.