a three point linkage analysis found a coefficient of coincidence value of 1.0
Added by Jennifer H.
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The coefficient of coincidence (C) measures the degree to which two genes assort independently. It is calculated by comparing the observed double crossover frequency to the expected frequency based on the individual crossover frequencies. Show more…
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Why is coefficient of coincidence a basis for strength of linkage?
Prasha M.
In the following testcross, genes $a$ and $b$ are $20 \mathrm{cM}$ apart, and genes $b$ and $c$ are $10 \mathrm{cM}$ apart: $a+c /+b+\times a b c / a b c$ If the coefficient of coincidence is 0.5 over this interval on the linkage map, how many triply homozygous recessive individuals are expected among 1000 progeny?
In a cross between a trihybrid and a completely recessive individual, there were 1000 offspring with the following genotypes: Abc/abc – 418 aBC/abc – 430 ABC/abc – 36 ABc/abc – 1 AbC/abc – 35 abC/abc – 2 abc/abc – 39 aBc/abc – 39 a. What is the map distance between loci B and C? b. What is the map distance between loci A and C? c. What is the coefficient of coincidence?
Adi S.
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