When prokaryotic cells copy their dna, replication begins at?

It begins at the OriC or the origin of replication. It is particular sequence of genome at which the replication is initiated. In prokaryotes, it typically begins at a single origin of replication. For example, in E. coli the origin of replication is made of three A-T rich repeats. The process of replication is the initial step in the central dogma of molecular biology. Most of the bacterias have a singular circular molecule of DNA and usually have a single origine of replication along its circular chromosome. 

It will dry out with less sunlight