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Base sequence


Base sequence analysis
A method, sometimes automated, for determining the base sequence.
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Base sequence The order of nucleotide bases in a DNA molecule; determines structure of proteins encoded by that DNA.
Base sequence analysis A method, sometimes automated, for determining the base sequence.
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Base sequence: The order of bases in a DNA molecule.
Base sequence analysis: A method, sometimes automated, for determining the sequence of bases in a strand of DNA.
Biotechnology: The use of biologic al processes to manufacture products.
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The three-base sequence in tRNA complementary to a codon on mRNA. A nucleotide triplet in a tRNA molecule that aligns with a particular codon in mRNA under the influence of the ribosome, ...
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triplet Three-base sequence of mRNA that codes for a specific amino acid or termination codon. PICTURE
trisomy A condition where a cell has an extra chromosome.
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Base sequence -- a partnership of organic bases found in DNA and RNA; adenine forms a base pair with thymine (or uracil) and guanine with cytosine in a double-stranded nucleic acid molecule.
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palindrome A segment of duplex DNA in which the base sequences of the two strands is the same from each end of the strand. paradigm In biochemistry, an experimental model held to be true.
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Changes in the base sequence of a DNA molecule resulting from the random integration of DNA from another source. See DNA, Mutation. In situ. Refers to performing assays or manipulations with intact tissues. Insulin.
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Back translation Use of the experimentally determined amino acid sequence of part or all of a polypeptide to determine the theoretical nucleic acid base sequence(s) which could code for it. This is normally done using a computer programme.
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Restriction enzymes always cut at the same base sequence. Because no two individuals have identical DNA, no two individuals will have the same length fragments. For example, the enzyme EcoRI always cuts DNA at the sequence GAATTC.
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Nucleic acid molecules with the same base sequence except for minor differences in alleles; (ii) nucleic acid molecules originating from strains of the same species, thus having at least long stretches of identical DNA base sequences; ...
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These differences physically exist as changes in the nucleotide base sequence of DNA. The environment can influence these variations. For example, radioactivity randomly changes the base sequence of DNA.
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" A large starting population of molecules (typically nucleic acids) that varies randomly in base sequence and shape is subjected to replication with variation, followed by selection.
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degeneracy The genetic code is said to be degenerate because more than one three-base sequence in DNA can code for one amino acid.
degeneration The death or functional impairment of cells connected to destroyed or severely damaged neurons.
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It must be noted that many mutations are common and unexpressed, particularly when it involves toggling of the third base sequence in a codon. Most deleterious mutations are not seen simply because they do not result in viable reproduction.
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a defined segment of DNA or RNA, usually carrying a radioactive label, used to identify a specific segment of DNA that carries the complementary base sequence
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
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What that means, then is that that identifies a region which is functionally important. That is, if you change the base sequence of the DNA in that particular region, you alter the function of the gene. And so those have been maintained.
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