Estimation with Normal Gene Ratios

  • Roy Robinson


Linkage is manifested whenever two simultaneously assorting genes are found to be regularly associated. In the classic Mendelian experiment, two genes should assort at random in the testcross and in the intercross. However, in some crosses, completely random assortment is not realized. In each of the crosses, the four phenotypes can be represented as formed from the original and parental combinations or as recombinations. Formally, linkage is indicated whenever the expected number of parental phenotypes significantly exceeds the expected number of recombinant phenotypes. Two linkage phases can be defined, depending upon the nature of the initial cross. Two genes are said to be in coupling or repulsion phase, according to whether they were contributed by the same or different parents.


Dominant Gene Recessive Gene Complementary Gene Linkage Phase Epistatic Gene 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Publishing Company Ltd. 1971

Authors and Affiliations

  • Roy Robinson

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