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→DNA providing instructions
What other human characteristics have been mapped in that much detail? --[[User:Ed Poor|Ed Poor]] <sup>[[User talk:Ed Poor|Talk]]</sup> 13:08, 11 July 2007 (EDT)
What other human characteristics have been mapped in that much detail? --[[User:Ed Poor|Ed Poor]] <sup>[[User talk:Ed Poor|Talk]]</sup> 13:08, 11 July 2007 (EDT)
As I understand it, Ed, a gene is a section of a chromosome that codes for a protein or RNA product. What dictates hair colour in particular is the DNA encoding for the amount of eumelanin produced by the body. Eye colour is also well understood. This is a fairly good explanation I think: [http://www.hhmi.org/cgi-bin/askascientist/highlight.pl?kw=&file=answers%2Fgenetics%2Fans_044.html] --[[User:Britinme|Britinme]] 15:59, 14 July 2007 (EDT)