The core promoter region is located most proximally and contains the RNA polymerase binding site, TATA box, and transcription start site (TSS). RNA polymerase will bind to this core promoter region stably and transcription of the template strand can initiate. The TATA box is a DNA sequence (5'-TATAAA-3) within the core promoter region where general transcription factor proteins and histones can bind.
The color palette of diamond is very richly varied; it ranges from pink through red, blue, green, yellow and brown even to black diamonds. The rarest color occurring in natural diamonds is red, followed by green, blue, purple and brown.
Natural color diamonds can vary in color saturation or strength from very faint to an intense vivid color. Just a slight shift in color strength can make a colored diamond affordable. The strength of color is one of the most important factors in determining the value of a natural colored diamond.he value of natural color diamonds is based on the rarity, strength and variation of color within each diamond. Below is a chart that illustrates the web of complex relationships that exists in the world of colored diamonds.