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DNA sequence that interrupts the protein-coding sequence of a gene; an intron is transcribed into RNA but is cut out of the message before it is translated into protein.
See also: exon.
Industry:Biology
An enzyme performing the same function as another enzyme but having a different set of amino acids. The two enzymes may function at different speeds..
Industry:Biology
An organism that contains cells or tissues with a different genotype. These can be mutated cells of the host organism or cells from a different organism or species..
Industry:Biology
The five-carbon sugar that serves as a component of RNA.
See also: ribonucleic acid, deoxyribose.
Industry:Biology
An unordered collection of clones (i.e., cloned DNA from a particular organism) whose relationship to each other can be established by physical mapping.
See also: genomic library, arrayed library.
Industry:Biology
Chromosome segments that have been turned 180 degrees. The gene sequence for the segment is reversed with respect to the rest of the chromosome..
Industry:Biology
A chromosomal segment that branches off from the rest of the chromosome but is still connected by a thin filament or stalk..
Industry:Biology
Determination of the original position (locus) of a gene or other marker on a chromosome..
Industry:Biology
The normal biological process whereby the two pieces of a chromosome pair are separated during meiosis and randomly distributed to the germ cells..
Industry:Biology
