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  Home >> Molecular Biology Dictionary >> Degenracy Of The Genetic Code - Deoxygeneration

Degeneracy (of the genetic code)
The specification of one amino acid by more than one codon. It arises from the inevitable edundancy resulting from 64 triplets in a triplet code (4 x 4 x 4 = 64) encoding only 20 amino
acids.

Degeneration
1. Changes in cells, tissues or organs due to disease. 2. The reduction in size or complete loss of organs during evoulution.

Dehiscence
The spontaneous and often violent opening of a fruit, Seed pod or anther to release and disperse the seeds or pollen

Dehydrogenase
An enzyme that catalyses the remove of hydrogen atoms in biological reactions.

Dehydrogenation
A chemical reaction in which hydrogen is removed from compound.

De-ionized water
Water which is free of most inorganic (not completely free, since Na is present in ample quantities) and most organic compounds.

Deletion
A mutation involving the removal of one or more base pairs in DNA sequence. Large deletions are visible as the lack of chromosomal segments.

Deliberate release
Putting something into the outside world; in biotechnology it means putting a genetically modified organism (GMO) into field trials.

Deme
A group of organisms in the same taxon.

Denaturated DNA
Duplex DNA that has been converted to single strands by breaking the hydrogen bonds of complementary nucleotide pairs. Usually achieved by heating.

Denaturation
Loss of native configuration of a macro-molecule (protein or nucleic acid) by physical or chemical means, usually accompanied by loss of biological activity. Denatured proteins often unfold their polypeptide properties of solubility. The sep molecules into single strands. M engineers to describe the des maintaining the double-stranded DNA molecule.

Denature
To induce structural alterations that disrupt the biological activity of a molecule. Often refers between base pairs in double-s1 to produce single-stranded polynucleotides, or altering the secondary and tertiary structure of a protein, destroying its activity.

Denitrification
1. A chemical process in which nitrates in the soil are reduced to molecular nitrogen, which is released to the atmosphere. de novo (L. "from the beginning, anew”) Arising, anew, afresh, once more. Also ex novo. 2. The anoxic biological conversion of nitrogen gas It occurs naturally in surface waters low in oxygen, and it can be engineered in wastewater treatment systems.

Deoxygenation
The consumption of oxygen by as they oxidized by the different aquatic organisms as they oxidized materials in the aquatic environment.

 

 

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