The B locus in dogs controls whether the dog is liver. Liver is recessive (b), so a dog needs two copies of the allele in order to be liver. If a dog is bb on the B locus then any and all black in its coat will become a brownish colour. Bb and BB have no effect.
Micro: Mini, small, tiny. Micro is also a term used in the RTS Starcraft, as a term for modified unit control. Micro can also refer to the descriptions of micro-organisms. Micro as a unit of measurement is defined as: One millionth..
Mils vs. Microns. Mil - A unit of measurement in the English system that is measured in thousandths of an inch. (i.e., .001 = one thousandth of an inch or 1.0 mil) Micron - A unit of measurement in the metric system that is equal to one thousandth of a millimeter. The M-Shop uses only the English Imperial/US system (inches, feet, etc.). All measurements taken in microns must be converted to thousandths of an inch.