Codon
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  Codon



Codon

   A set of any three adjacent bases in the DNA or RNA. There are 64 different codons of which 61 specify the incorporation of an amino acid into a polypeptide chain while the remaining three are stop codons that signal the end of a polypeptide.

RELATED TERMS
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Adjacent
Lying nearby. Related terms include superjacent, subjacent, and circumjacent. From ad-, near + the Latin jacere, to lie = to lie near.

RNA
Ribonucleic acid. A long-chain, usually single-stranded. The primary function of RNA is protein synthesis within a cell. However, RNA is involved in various ways in the processes of expression and repression of hereditary information. The three main functionally distinct varieties of RNA molecules are: (1) messenger RNA (mRNA) which is involved in the transmission of DNA information, (2) ribosomal RNa (rRNA) which makes up the physical machinery of the synthetic process, and (3) transfer RNA (tRNA) which also constitutes another functional part of the machinery of protein synthesis.

Incorporation
A primitive defense mechanism, operating unconsciously, in which the psychic representation of a person, or parts of the person, is figuratively ingested.



SIMILAR TERMS
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Codo doctors
All doctors near Codo, Brazil. Doctors who can assist a patient in Codo.

Codoxy
Codoxy is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): aspirin; oxycodone hydrochloride; oxycodone terephthalate.



PREVIOUS AND NEXT TERMS
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Cockroach allergy
A condition that manifests as an allergic reaction when one is exposed to tiny particles from cockroaches. Asthma can be due to exposure to cockroach allergens (allergy-provoking substances). These substances are the proteins shed or excreted by the cockroaches.

Cod liver oil
An oil extracted from the liver of the cod. Cod liver oil was once given religiously to children every day as a rich source of vitamins A and D. It was also used to treat children with rickets, a bone disease due to vitamin D deficiency.

Code
The genetic code is the correspondence between the triplet of bases in DNA with the amino acids.

Codes, drug caution
Abbreviations on medications that indicate caution. While not a part of the historical heritage of ancient prescription abbreviations, drug caution codes provide very valuable warnings.

Coding DNA
A sequence of DNA that codes for protein. Coding DNA sequences are separated by long regions of DNA called introns that have no apparent function. Coding DNA is also known as an exon.

Codon

Coefficient of inbreeding
A measure of how close two people are genetically to each another. The coefficient of inbreeding, symbolized by the letter F, is the probability that a person with two identical genes received both genes from one ancestor.

Coenzyme
A substance that enhances the action of an enzyme. (An enzyme is a protein that functions as a catalyst to mediate and speed a chemical reaction).

Coenzyme Q10
A compound needed for the proper functioning of an enzyme, a protein that speeds up the rate at which chemical reactions take place in the body. Coenzyme Q10 is used to produce energy to fuel cell growth and maintenance. Coenzyme Q10 is thought to improve the function of mitochondria, the "powerhouses" that produce energy in cells. Coenzyme Q10 is also an antioxidant, a substance that protects cells from highly reactive chemicals called free radicals that can damage cells and their DNA. The highest amounts of coenzyme Q10 are in the heart, liver, kidneys, and pancreas and the lowest amounts are in the lungs. The levels of coenzyme Q10 normally decline with age.

Coeval
Of the same or equal age or duration. For example, the two elderly men were coeval with one another. Coeval usually refers to coexistence for a very long time.

Coffin-Lowry syndrome
An X-linked form of mental retardation in which the affected males have short stature and characteristic face, finger and skeletal abnormalities. Facial features include prominent forehead, widespread eyes, downslanting eyeslits, prominent ears, thick lips and irregular/missing teeth. The hands are large and soft with lax skin and tapering fingers. Skeletal changes include kyphosis/scoliosis and pectus carinatum (pigeon breast) or pectus excavatum (caved-in chest). The syndrome is due to mutation of the gene on the X chromosome that encodes RSK2, a growth-factor regulated protein kinase.

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