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HomeHomework HelpbiologyCentral Dogma of Molecular Biology

Central Dogma of Molecular Biology

The central dogma of molecular biology describes the flow of genetic information within a biological system, where DNA is transcribed into RNA, which is then translated into proteins. This process is fundamental to gene expression and the functioning of all living organisms.

intermediate
2 hours
Biology
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Overview

The central dogma of molecular biology is a fundamental concept that explains how genetic information flows within a biological system. It outlines the processes of transcription, where DNA is converted into RNA, and translation, where RNA is used to synthesize proteins. This flow of information is ...

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Key Terms

DNA
Deoxyribonucleic acid, the molecule that carries genetic information.

Example: DNA is found in the nucleus of cells.

RNA
Ribonucleic acid, a molecule that plays a role in coding, decoding, regulation, and expression of genes.

Example: mRNA is a type of RNA that carries instructions from DNA.

Transcription
The process of copying a segment of DNA into RNA.

Example: During transcription, DNA is converted into mRNA.

Translation
The process of synthesizing proteins from mRNA.

Example: Translation occurs at the ribosome.

Gene Expression
The process by which information from a gene is used to synthesize a functional gene product.

Example: Gene expression can be influenced by environmental factors.

Ribosome
A cellular structure that synthesizes proteins by translating mRNA.

Example: Ribosomes can be found free in the cytoplasm or attached to the endoplasmic reticulum.

Related Topics

Genetic Engineering
The manipulation of an organism's genes using biotechnology.
advanced
Protein Synthesis
The process by which cells build proteins based on genetic instructions.
intermediate
Cellular Regulation
The mechanisms that control cellular processes and gene expression.
advanced

Key Concepts

DNA replicationTranscriptionTranslationGene expression