Dna Ligase: In recombinant DNA technology, an enzyme that seals together two DNA fragments from different sources to form a recombinant DNA molecule.

 

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Dna Ligase: In recombinant DNA technology, an enzyme that seals together two DNA fragments from different sources to form a recombinant DNA molecule.

Recombinant Dna Molecules: New combinations of DNA fragments formed by cutting DNA segments from two sources with restriction enzyme and then joining the fragments together with DNA ligase. Interspecies transfer of ge . . . View Full Definition

DNA Virus: A virus that has DNA as its genetic material and replicates using a DNA-dependent DNA polymerase.

Junk DNA: Stretches of dna that do not code for genes: most of the genome consists of so-called junk dna which may have regulatory and other functions. Also called non-coding dna.

Finished DNA Sequence: High-quality, low error, gap-free dna sequence of the human genome. Achieving this ultimate 2003 hgp goal requires additional sequencing to close gaps, reduce ambiguities, and allow for only . . . View Full Definition

Lligase: An enzyme that functions in dna repair.

Exogenous DNA: Dna originating outside an organism that has been introducted into the organism.

Mitochondrial DNA: The genetic material found in mitochondria, the organelles that generate energy for the cell. Not inherited in the same fashion as nucleic dna.

Repetitive DNA: Sequences of varying lengths that occur in multiple copies in the genome: it represents much of the human genome.

Recombinant Dna Technology: A series of techniques in which DNA fragments are linked to self-replicating forms of DNA to create recombinant DNA molecules. These molecules in turn are replicated in a host cell to create . . . View Full Definition