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gene - (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity; "genes were formerly called factors" |
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cistron,
factor |
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sequence film consisting of a succession of related shots that develop a given subject in a movie
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deoxyribonucleic acid,
desoxyribonucleic acid,
dna (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information; "DNA is the king of molecules"
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chromosome a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order; "humans have 22 chromosome pairs plus two sex chromosomes"
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genetics,
genetic science the branch of biology that studies heredity and variation in organisms
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molecular biology the branch of biology that studies the structure and activity of macromolecules essential to life (and especially with their genetic role)
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dominant gene gene that produces the same phenotype in the organism whether or not its allele identical; "the dominant gene for brown eyes"
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allele,
allelomorph (genetics) either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a particular chromosome and that control the same character; "some alleles are dominant over others"
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genetic marker a specific gene that produces a recognizable trait and can be used in family or population studies
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homeotic gene one the genes that are involved in embryologic development
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lethal gene any gene that has an effect that causes the death of the organism at any stage of life
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linkage group,
linked genes any pair of genes that tend to be transmitted together; "the genes of Drosophila fall into four linkage groups"
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modifier,
modifier gene a gene that modifies the effect produced by another gene
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mutant gene a gene that has changed so that the normal transmission and expression of a trait is affected
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nonallele genes that are not competitors at the same locus
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operator gene a gene that activates the production of messenger RNA by adjacent structural genes
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oncogene,
transforming gene a gene that disposes normal cells to change into cancerous tumor cells
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polygene a gene that by itself has little effect on the phenotype but which can act together with others to produce observable variations
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proto-oncogene a normal gene that has the potential to become an oncogene
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recessive gene gene that produces its characteristic phenotype only when its allele is identical; "the recessive gene for blue eyes"
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regulatory gene,
regulator gene a gene that produces a repressor substance that inhibits an operator gene
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repressor gene gene that prevents a nonallele from being transcribed
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structural gene a gene that controls the production of a specific protein or peptide
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suppresser,
suppresser gene,
suppressor,
suppressor gene an electrical device for suppressing unwanted currents
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transgene an exogenous gene introduced into the genome of another organism
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x-linked gene a gene located on an X chromosome
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holandric gene,
y-linked gene a gene located on a Y chromosome
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