DNA

Deoxyribonucleic Acid

What is this?


dedeoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.


the fundamental and distinctive characteristics or qualities of someone or something, especially when regarded as unchangeable.

DNA is present in almost everything on earth!

To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies. Each DNA sequence that contains instructions to make a protein is known as a gene.
there are things that DNA are associated with that are very important and these are heredity, replication, and protein production .
So what does heredity have to do with DNA? Hereditary traits, like eye color, nose shape and height, are passed on from parent to offspring through genes in the DNA. This takes place post fertilization, during the meiosis process.
what does replication do for DNA? Before a cell can reproduce, it must first replicate, or make a copy of, its DNA. Where DNA replication occurs depends upon whether the cells is a prokaryote or a eukaryote (see the RNA sidebar on the previous page for more about the types of cells). DNA replication occurs in the cytoplasm of prokaryotes and in the nucleus of eukaryotes. Regardless of where DNA replication occurs, the basic process is the same.
Protein production is controlled by DNA. Most genes contain the information needed to make functional molecules called proteins. (A few genes produce other molecules that help the cell assemble proteins.) The journey from gene to protein is complex and tightly controlled within each cell. It consists of two major steps: transcription and translation. Together, transcription and translation are known as gene expression

What helps DNA? RNA
ribonucleic acid, a nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins, although in some viruses RNA rather than DNA carries the genetic information
types of RNA
1. messenger
2. Ribosomal
3. Transfer


What is DNA?

DNA Transcription and Translation

Transcription in DNA creates mRNA (messenger)
Translation in DNA creates proteins