Encoded within this DNA are the directions for traits as diverse as the color of a person's eyes, the scent of a rose, and the way in which bacteria infect a lung cell. DNA is found in nearly all ...

Although the DNA code from cell to cell is the same, there are many different types of cells within the body, each with a specific function. For example, the long, narrow muscle cell is designed ...

So how does your DNA know when it's in a blood cell versus an olfactory cell, for example? How does it know which genes need to be "switched on"? How does a cell know and carry out its function?

The approach, called DNA microscopy, uses simple chemical reactions essentially to map a cell’s interior, highlighting the contents and indicating exactly where everything can be found.

Cell division is the mechanism by which DNA is passed from one generation of cells to the next and ultimately, from parent organisms to their offspring. Although eukaryotes and prokaryotes both ...

Testing for trisomy 21 is shown as an illustrative example. In random sequencing, cell-free DNA (cfDNA) fragments originating from any chromosome are sequenced. A random representative selection ...