Term
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Definition
| genes located on the same chromosome |
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Term
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Definition
| genes located together on the same chromosome. |
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Term
| Non recombinant (parental) gamete |
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Definition
| contains only the original combinations of genes present in the parents. |
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Term
| Non recombinant (parental) progeny |
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Definition
| possesses the original combinations of traits possessed by the parents. |
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Term
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Definition
| possesses new combination of genes. |
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Term
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Definition
| proportion of recombinant progeny produced in a cross. |
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Term
| coupling (cis) configuration |
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Definition
| arrangement in which two or more wild-type genes are on one chromosome and their mutant alleles are on the homologous chromosome. |
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Term
| repulsion (trans) configuration |
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Definition
| arrangement in which each chromosome contains one wild-type (dominant) gene and one (recessive) gene. |
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Term
| interchromosomal recombination |
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Definition
| recombination among genes on different chromosomes. |
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Term
| intrachromosomal recombination |
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Definition
| recombination among genes on the same chromosome. |
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Term
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Definition
| map of the relative distances between genetic loci, markers, or other chromosome regions determined by rates of recombination. |
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Term
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Definition
| map of physical distances between loci, genetic markers, or other chromosome segments. measured in base pairs. |
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Term
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Definition
| unit of measure for distances on a genetic map. 1 map unit = 1% recombination. |
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Term
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Definition
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Term
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Definition
| cross between an individual heterozygous at two loci and an individual homozygous for recessive alleles at those loci. |
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Term
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Definition
| cross between an individual heterozygous at three loci and an individual homozygous for recessive alleles at those loci. |
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Term
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Definition
| Degree to which one crossover interferes with the additional crossovers. |
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Term
| coefficient of coincidence |
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Definition
| ratio of observed double crossovers to expected double crossovers. |
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Term
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Definition
| Any gene or DNA sequence used to identify a location on a genetic or physical map. |
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Term
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Definition
| technique for determining the chromosomal location of a gene by studying the association of its phenotype or product with a particular chromosome deletions. |
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Term
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Definition
| difference from the wild-type in the number or structure of one or more chromosomes. |
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Term
| chromosome rearrangement 9 |
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Definition
| change from the wild-type in the structure of one or more chromosomes. |
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Term
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Definition
| mutation that doubles a segment of a chromosome. |
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Term
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Definition
| duplication oft a chromosome segment that is adjacent to the original segment. |
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Term
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Definition
| chromosome rearrangement in which the duplicated segment is some distance from the original segment, either on the same chromosome or on a different one. |
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Term
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Definition
| duplication of a chromosome segment in which the sequence of the duplicated segment is inverted relative to the sequence of the original segment. |
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Term
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Definition
| loss of a chromosome segment. |
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Term
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Definition
| expression of a normally recessive allele owing to a deletion on the homologous chromosome. |
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Term
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Definition
| must be present in two copies for normal function. If one copy of the gene is missing, a mutant phenotype is produced. |
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Term
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Definition
| rearrangement in which a segment of a chromosome has been inverted 180 degrees. |
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Term
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Definition
| Chromosome inversion that does not include the centromere in the inverted region. |
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Term
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Definition
| chromosome inversion that includes the centromere in the inverted refion. |
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