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..
Noun. 1. micron-a metric unit of length equal to one millionth of a meter. micrometer. metric linear unit-a linear unit of distance in metric terms. micromillimeter, micromillimetre, millimicron, nanometer, nanometre, nm-a metric unit of length equal to one billionth of a meter.