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amplificación genética

A selective increase in the number of copies of a gene coding for a specific protein without a proportional increase in other genes. It occurs naturally via the excision of a copy of the repeating sequence from the chromosome and its extrachromosomal replication in a plasmid, or via the production of an RNA transcript of the entire repeating sequence of ribosomal RNA followed by the reverse transcription of the molecule to produce an additional copy of the original DNA sequence.

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amplificación
Biologia; Genoma

An increase in the number of copies of a specific DNA fragment; can be in vivo or in vitro. See also: cloning, polymerase chain reaction.

genética
Archeologia; Evoluzione umana

The science of heredity that involves the structure and function of genes and the way genes are passed from one generation to the next.

genética
Archeologia; Evoluzione

The study of genes and their relationship to characteristics of organisms.

genética
Biologia; Biologia cellulare

The study of the structure and function of genes and the transmission of genes from parents to offspring.

genética
Antropologia; Antropologia culturale

The study of the mechanisms of heredity and biological variation.

antihelmínticos
Agricoltura; Agricoltura (generale)

Agents destructive to parasitic worms. They are used therapeutically in the treatment of infestation with parasitic worms of the helminth class, in humans and animal.

antígenos de superficie
Agricoltura; Agricoltura (generale)

Antigens on surfaces of cells, including infectious or foreign cells or viruses. They are usually protein-containing groups on cell membranes or walls.

antígenos de neoplasias
Agricoltura; Agricoltura (generale)

Proteins, glycoprotein, or lipoprotein moieties on surfaces of tumor cells that are usually identified by monoclonal antibodies. Many of these are of either embryonic or viral ...

antígenos de histocompatibilidad
Agricoltura; Agricoltura (generale)

A group of antigens that includes both the major and minor histocompatibility antigens. The former are genetically determined by the major histocompatibility complex. They ...

antígeno nuclear de célula proliferativa
Agricoltura; Agricoltura (generale)

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anticonceptivos
Agricoltura; Agricoltura (generale)

Agents, devices, methods, or procedures which diminish the likelihood of or prevent conception.

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