Hurricane Odile was the most powerful storm to hit Cabo San Lucas on the Baja California peninsula in Mexico. A Category 3 hurricane when it made landfall, Odile had winds of 125 mph. But the hurricane is losing strength as it moves north.
The cell cycle or cell-division cycle is the series of events that take place in a cell leading to its division and duplication of its DNA (DNA replication) to produce two daughter cells. In bacteria, which lack a cell nucleus, the cell cycle is divided into the B, C, and D periods. The B period extends from the end of cell division to the beginning of DNA replication. DNA replication occurs during the C period.
When cell replication is necessary, a cell enters the cell cycle. Prior to the mitosis phase of the cycle, the cell undergoes a period of growth where it replicates its DNA and organelles. Prophase. In the first stage of mitosis called prophase, the replicated chromatin fibers form chromosomes. Each replicated chromosome consists of two chromatids (sister chromatids) connected at the centromere region. Chromosome centromeres serve as a place of attachment for spindle fibers during cell division.