Dominant genes tend to overpower recessive genes. If brown hair is dominant(M) and blonde hair is recessive(m) then to have blonde hair you need m,m, brown hair would be M,M or M,m.
The expression of a recessive trait occurs when two recessive alleles recombine. I'm going to use an example for this. Let's say that blue hair is recessive, and black hair is dominant. B = Black...
Recessive is a relative term used to describe the relationship to another allele termed the dominant allele. That traits of the recessive allele will only be shown if the person has two copies of the...