Term
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Definition
| the determination of relative positions of genes along the chromosome |
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Term
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Definition
Genes that are located on the same chromosome and do not undergo independent assortment but are instead transmitted together
they have less than 50% recombination frequency |
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Term
| coupling or cis heterozygote |
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Definition
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Term
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Definition
| coupling or cis heterozygote |
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Term
| repulsive or trans heterozygote |
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Definition
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Term
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Definition
| repulsive or trans heterozygote |
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Definition
| crossing over; this happens during meiosis |
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Term
| Recombination fraction (r) |
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Definition
| the fraction of chromosomes that are recombinants, in an experiment to measure recombination rate |
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Definition
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Definition
| have genotype that results from recombination |
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Term
| maximum frequency of recombinants for genes on the same chromosome |
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Definition
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Term
| maximum frequency of recombinants for genes on separate chromosomes |
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Definition
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Term
| some characteristics of linked genes |
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Definition
-located on same chromosome
-transmitted together
-less than 50% recombination frequency |
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Term
| when 2 genes on the same chromosome have recombination frequency < 50%,... |
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Definition
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Term
| when 2 genes on the same chromosome have recombination frequency ≥ 50%,... |
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Definition
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Term
| chi-square test that says genes assort independently |
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Definition
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Term
| chi-square test that says genes do not assort independently |
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Definition
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Term
| degrees of freedom when you're doing a chi-square for 1 locus |
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Definition
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Term
| Linkage between two genes is a measure of... |
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Definition
the probability that the two genes are being
transmitted together to the offspring |
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Term
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Definition
| illustrates the linear order of genes along the chromosome with distances between adjacent genes proportional to the recombination frequency between them |
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Term
| The unit of distance on a genetic map |
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Definition
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Term
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Definition
| The unit of distance on a genetic map |
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Term
| One map unit represents... |
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Definition
| 1% recombination or crossing over event |
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Term
| how to calculate recombination frequency |
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Definition
| Recombination frequency = (total number of recombinants)/(total number of individuals) |
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Term
| map unit is also called... |
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Definition
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Term
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Definition
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Term
| how double recombinants are counted to estimate distance between A and C |
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Definition
| To estimate the distance between A and C, double recombinants are counted twice |
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Term
| how to calculate expected number of double crossover |
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Definition
expected double crossing over = P(co A-B) x P(co B-C)
then you multiply by population size to get the expected number |
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Term
| when the observed number of double crossover is lower than the expected, this indicates... |
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Definition
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Term
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Definition
| crossing over in one region reducing the probability of crossing over in the adjacent region |
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Term
| coefficient of coincidence |
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Definition
| the ratio of the observed number of double crossovers to the expected number of double crossovers |
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Term
| how to calculate coefficient of coincidence |
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Definition
coefficient of coincidence = (observed double crossovers)/(expected double crossovers)
express it as a percent |
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Term
| how to calculate interference |
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Definition
Interference = 1 – Coefficient of coincidence
express it as a percent |
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