Once the DNA in a cell is replicated, the cell can divide into two cells, each of which has an identical copy of the original DNA. DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules.
The heart is a vital organ located in the center of the chest with a slight tilt to the left. Using rhythmic muscle contractions, it circulates blood through veins and arteries, which supplies tissues with oxygenated blood and disposes waste.
How Does the Heart Pump Blood? The heart is located between the lungs behind the breast bone. About two-third of the heart lies to the left side of our midline of the body and about one-third to the right side. It appears as a cone-shaped and hollow muscle mass. The heart is a double pump made up of cardiac muscles.