If you were to graph out a trait or phenotype that is polygenic, you would notice a trend. These traits have what's called continuous variation, showing a bell curve of values for the phenotype. This is because there are multiple genes that play a role in the phenotype, and each gene could have multiple alleles.f you were to graph out a trait or phenotype that is polygenic, you would notice a trend. These traits have what's called continuous variation, showing a bell curve of values for the phenotype. This is because there are multiple genes that play a role in the phenotype, and each gene could have multiple alleles.
Definition of SIC Code. An SIC Code is a number used to specify what industry a particular company belongs to. The Standard Industrial Classification (SIC) code system was replaced by the North American Industry Classification System (NAICS) in 1997.You can use our tools to lookup SIC codes and select SIC code mailing lists.Additional resources: 1  SIC Codes (from the SEC).he Standard Industrial Classification (SIC) code system was replaced by the North American Industry Classification System (NAICS) in 1997. You can use our tools to lookup SIC codes and select SIC code mailing lists.
Definition of sic : intentionally so written â used after a printed word or passage to indicate that it is intended exactly as printed or to indicate that it exactly reproduces an original said he seed [sic] it all