Axons that cross from one side of the spinal cord to the other are found in the

The axons that cross from one side of cord to the other before reaching gray matter are the gray commissures. The white columns are interconnected by the anterior white commissure, a region where axons cross from one side of the spinal cord to the other. The white matter between the anterior and posterior columns on each side makes up lateral white column. Each column contains tracts whose axons share functional properties.

Rna polymeras should attache to the promoter.