Answer:
Sigma factors bind to the promoter region of a particular gene and facilitating the binding of RNA Polymerase to the promoter region (formation of the RNA polymerase holoenzyme complex) in order initiate transcription of the gene.
Put simply - Helps RNA Polymerase do it's job.
Pollution caused the environment to become more darkly colored, so moths were selected to be blacks and greys. Before pollution they were white and lighter colors. <span />
Forceps, they literally are almost the exact same thing.
Bacteriaciltous is what I'd try to learn I love the complexity
Mitochondria. In a cell, mitochondria releases energy (ATP) from glucose through aerobic (cellular) respiration.
