Answer
The genes would be transcribed into mRNA which would then be translated into proteins and enzymes that would express the inherited traits of the DNA.
Work Step by Step
Some genes are dominant over others which means that they will usually be expressed over recessive genes. So the genes that code for hair color would be expressed based on what genes the offspring has in its chromosome. The genes would be transcribed into mRNA which would then be translated into proteins and enzymes that would express the inherited traits of the DNA. Therefore, if child has brown hair dominant in his chromosome, this phenotype will be expressed.