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.
GIAâs grading practice dictates the hue of the diamond is disclosed for grades that are K and lower. In nature, the most common color for mined diamonds is yellow which is caused by the presence of nitrogen in its chemical composition. The next most common color you would see in diamonds is brown.