Gene expression
Gene expression: The translation of information encoded in a gene into protein or RNA structures that are present and operating in the cell. Expressed genes include genes that are transcribed into messenger RNA (mRNA) and then translated into protein, as well as genes that are transcribed into RNA, such as transfer and ribosomal RNAs, but not translated into protein.
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- Gene family
Gene family: A group of genes that are related in structure and often in function. The genes in a gene family are descended from an ancestral gene. For example, the hemoglobin genes belong to one gene family that was created by gene duplication and divergence.
- Gene mapping
Gene mapping: The charting of the positions of genes on a DNA molecule or chromosome and the distance, in linkage units or physical units, between genes.
- Gene markers
Gene markers: Detectable genetic traits or distinctive segments of DNA that serve as landmarks for a target gene. Markers are on the same chromosome as the target gene. They must be near enough to the target gene to be genetically linked to it: to be inherited usually together with that gene, and so serve as […]
- Gene pool
Gene pool: The sum total of genes, with all their variations, possessed by a particular species at a particular time.
- Gene product
Gene product: The RNA or protein that results from the expression of a gene. The amount of gene product is a measure of the degree of gene activity.