The brown allele is always dominant over the green and blue alleles, the green allele is always dominant over the blue allele, and the blue allele is always recessive. Because of this, it is possible for two brown-eyed parents to have a child with a different eye color than theirs.For two brown-eyed parents to have a blue-eyed child, for example, the mother and father would need to pass on a pair of blue alleles each to their offspring.he brown allele is always dominant over the green and blue alleles, the green allele is always dominant over the blue allele, and the blue allele is always recessive. Because of this, it is possible for two brown-eyed parents to have a child with a different eye color than theirs.
By Anne Marie Helmenstine, Ph.D. Micron Definition: A micron is a unit of length equivalent to a millionth of a meter. 1 micron = 1 Î¼m = 10 -6 m. Also Known As: micrometer, micrometre, Î¼m. Examples: Red blood cells are approximately 10 microns in diameter. Human hair is between 10 and 100 microns in diameter.
The Micron nibs are essentially âmicro size plastic tubesâ which allow our pigment ink formula to easily flow from the barrel to the paper. When any foreign matter clogs these tubes, the Pigma ink flow is blocked. Microns are designed to be used at a 90degree angle, like technical pens. The smaller point sizes (005 and 01) use very delicate nibs to create the extra fine line, so they need to be used with a very light touch, no more than the weight of the pen itself. Microns require very little pressure to provide a flow of ink.