Sunday, June 9, 2013

DNA DNA


The double helix structure of DNA
DNA, deoxyribonucleic acid, or in short, all organisms and some viruses energy required for biological evolution and is a nucleic acid carrying the genetic instructions action. The main role of DNA long-term storage of information. Such as proteins and RNA molecules per cell DNA instructions needed to build in comparison to other components, patterns, templates or includes flushing. The DNA segments carrying this genetic information are called genes. However, to avail the benefits of other genetic information of DNA sequence organization (cells), such as the conditions of structural purposes (such as to determine the shape of the chromosomes), and others.
Chemical, DNA, in two long polymers of simple entities called nucleotides. Ester-bound to the polymer backbone, sugar and phosphate groups oluşur.Iki yarn extends in the opposite direction. Each of the four types of sugar molecules called bases. Backbone of DNA, the genetic information on the sequence of the four bases. During protein synthesis, this information, using the genetic code, determines the protein's amino acid sequence is read. During this process, DNA, RNA, another copy of the nucleic acid has a similar structure. This process is called transcription.
Cells, DNA is organized into structures called chromosomes. Paired chromosomes for cell division, DNA replication takes place during that time. Eukaryotic organisms (animals, plants, fungi, and protists) cell nucleus prokaryotic organisms (bacteria and archaea) bulundururken in the DNA found in the cytoplasm of cells. In chromosomes, chromatin proteins (eg histones) is a compact and organize DNA. This compact design as part of the reading of DNA and other proteins, the interaction between DNA control guidance

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