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.
If crossing over does not happen the product is parental gametes. Meaning there is less genetic variation.
TOPOGRAPHY AND ELEVATION .
Cancer: An abnormal growth of cells which tend to proliferate in an uncontrolled way and, in some cases, to metastasize (spread). Cancer is not one disease. It is a group of more than 100 different and distinctive diseases. Cancer can involve any tissue of the body and have many different forms in each body area.
im pretty sure it is the first one
Answer:
wall
Explanation:
It is composed of peptidoglycan. The wall gives the cell its shape and surrounds the cytoplasmic membrane, protecting it from the environment.
