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cistron

cistron A section of the DNA molecule that specifies the formation of one polypeptide chain. A complementation test is performed to determine whether two mutant sites of a gene are in the same cistron or in different ones. In the cis configuration, both mutants are on one homologous chromosome and both wild-types are on the other (a1a2/++), producing a wild-type phenotype. In the trans configuration each homologue has a mutant and a non-mutant (a1+/a2+), producing a mutant phenotype.

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cistron

cistron A section of the DNA molecule that specifies the formation of one polypeptide chain. A cis-trans test is performed to determine whether two mutant sites of a gene are in the same cistron or in different ones. In the cis configuration, both mutants are on one homologous chromosome and both wild types are on the other (a1a2/++), producing a wild-type phenotype. In the trans configuration each homologue has a mutant and a non-mutant (a1+/a2+), producing a mutant phenotype.

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"cistron." A Dictionary of Zoology. . Encyclopedia.com. 21 Feb. 2018 <http://www.encyclopedia.com>.

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cistron

cistron A length of DNA that contains the information for coding a specific polypeptide chain or a functional RNA molecule (i.e. transfer RNA or ribosomal RNA). In the case of a protein, a cistron codes for a messenger RNA (mRNA) molecule. The cistron as a unit of function was defined by the cis-trans test: mutations occurring within a cistron affect the same function.

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"cistron." A Dictionary of Biology. . Encyclopedia.com. 21 Feb. 2018 <http://www.encyclopedia.com>.

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"cistron." A Dictionary of Biology. . Retrieved February 21, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/cistron-1

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