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.
The heart is located under the rib cage between the lungs, with slightly more to the left of midline than the right. The human heart, which is normally about the size of your fist, is located behind and to the left of your breastbone, also called the sternum. Watch this animation to learn more about your heart and how it works. right behind your ribcage & a little to the left in the center of your body. The heart lies within the thorax in the body. This location is called the mediastinum. The heart is about the size of your fist and is located sub-sternal, center thoracic, superior to the stomach with the apex on the left.