Genome

Genome

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Genome

intron

Biology; Genome

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.

centromere

Biology; Genome

A specialized chromosome region to which spindle fibers attach during cell division..

reverse transcriptase

Biology; Genome

An enzyme used by retroviruses to form a complementary DNA sequence (cDNA) from their RNA. The resulting DNA is then inserted into the chromosome of the host cell..

isoenzyme

Biology; Genome

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..

chimera

Biology; Genome

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..

ribonucleic acid (RNA)

Biology; Genome

A chemical found in the nucleus and cytoplasm of cells; it plays an important role in protein synthesis and other chemical activities of the cell. The structure of RNA is similar to that of DNA. ...

A photomicrograph of an individual's chromosomes arranged in a standard format showing the number, size, and shape of each chromosome type; used in low-resolution physical mapping to correlate gross ...