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.
Where is my heart located exactly? The heart itself is only the size of a fist, and itâs exact location is behind the breastbone (sternum) and slightly to the left of center, as you can see in the diagram above. So if you are looking down at your body, place your hand right in the center of your chest.