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.
Silicon carbide (SiC), also known as carborundum /kÉrbÉËrÊndÉm/ , is a compound of silicon and carbon with chemical formula SiC.It occurs in nature as the extremely rare mineral moissanite. Silicon carbide powder has been mass-produced since 1893 for use as an abrasive.Grains of silicon carbide can be bonded together by sintering to form very hard ceramics that are widely used in applications requiring high endurance, such as car brakes, car clutches and ceramic plates in bulletproof vests.ilicon carbide (SiC), also known as carborundum /kÉrbÉËrÊndÉm/ , is a compound of silicon and carbon with chemical formula SiC.