When does sigma factor normally dissociate from rna polymerase? a)after the process of initiation)following the addition of nucleosomes)after transcription has terminated)after the addition of nucleosomes)after the binding of rho

The correct answer will be option-A

Explanation:

Sigma factor is a transcription initiation factor present in the prokaryotes and is composed of protein.

The sigma factor allows the binding of the specific RNA polymerase to the promoter of the gene. The binding of the sigma factor to the RNA polymerase form RNA polymerase holoenzyme which initiates the process of transcription.

The sigma factor dissociates once the initiation begins and the process of elongation has to begin leaving the core enzyme to carry out the elongation process.

Thus, option-A is the correct answer.

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

this protocol describes a detailed procedure for intracellular flow cytometry staining.