DNA What to Know

Deoxyribonucleic acid (DNA) is a molecule that contains instructions for an organism's development and characteristics. It is found in the nucleus of cells and is made up of four different types of nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C). The sequence of these nucleotides determines the genetic code, which is read by cells to produce proteins.

Here are some key things to know about DNA:

* DNA is a double helix, meaning it has two strands that are twisted around each other.

* The nucleotides in DNA are arranged in a specific order, which determines the genetic code.

* The genetic code is read by cells to produce proteins. Proteins are essential for the structure, function, and regulation of cells.

* DNA replication occurs before cell division, ensuring that each new cell receives a copy of the genetic code.

* DNA mutations can occur, which are changes in the sequence of nucleotides. Mutations can have a variety of effects on an organism, depending on the location and type of mutation.

* DNA repair mechanisms help to correct errors in the genetic code.

* DNA is essential for life. Without DNA, cells would not be able to produce proteins, and organisms would not be able to survive.

DNA is a complex molecule that plays a vital role in biology. The study of DNA, known as genetics, has revolutionized our understanding of life and has led to the development of powerful technologies such as genetic engineering and DNA fingerprinting.