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Definition
| A representation of all chromosomes in the genome as lines, marked with the positions of genes. Also shows distances between the loci based on some kind of scale. |
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Definition
| A chromosome map in which the positions of loci shown are based on recombinant frequencies. |
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Definition
| The situation in which two genes are on the same chromosome as deduced by recombinant frequencies less than 50 percent. |
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Definition
| The exchange of corresponding chromosomes parts between homologs by breakage and reunion. |
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Definition
| In a heterozygote having two mutant sites within a gene or gene cluster, the arrangement A1A2/a1a2. |
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Definition
| In a heterozygote with two mutant sites within a gene or gene cluster, the arrangement a1+/+a2. |
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Definition
| A chromosome map; an abstract map of chromosomal loci that is based on recombinant frequencies. |
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Definition
| A distance on the chromosome map corresponding to 1 percent recombinant frequency. |
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Term
| Recombinant Frequency (RF) |
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Definition
| The proportion (percentage) of recombinant cells or individuals. |
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Definition
| A testcross in which one parent has three heterozygous gene pairs. |
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Definition
| A measure of the independence of crossovers from each other, calculated by subtracting the coefficient of coincidence (c.o.c) from 1. 1- c.o.c. |
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Term
| Coefficient of Coincidence (c.o.c.) |
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Definition
| The ratio of the observed number of double recombinants to the expected number. O/E. |
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