Invertebrate mitochondrial code

Invertebrate mitochondrial code is a variant of the universal genetic code. It is used by the mitochondria of invertebrates, a group of animals that lack a backbone, such as insects, mollusks, and worms.

Overview

The invertebrate mitochondrial code is one of the several genetic codes used by organisms to translate messenger RNA (mRNA) sequences into proteins. This code is specifically used by the mitochondria of invertebrates. Mitochondria, often referred to as the "powerhouses of the cell," have their own DNA and protein synthesis machinery, separate from the rest of the cell.

Differences from the Universal Genetic Code

The invertebrate mitochondrial code differs from the universal genetic code in several ways. The most notable difference is that the codon AGG codes for serine instead of arginine, and the codons ATA and AGA/AGG code for methionine and stop respectively, instead of isoleucine and arginine.

Implications

These differences in the genetic code have important implications for the study of evolution and genetics. They provide evidence for the theory of the endosymbiotic origin of mitochondria, suggesting that mitochondria were once independent organisms that were engulfed by a larger cell.

See Also

• Genetic code
• Mitochondria
• Invertebrates
• Evolution
• Genetics

References

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