, Volume 8, Issue 4, pp 291-297

The probable errors of calculated linkage values, and the most accurate method of determining gametic from certain zygotic series

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Summary

  1. Formulae are given for the probable errors of linkage and reduplication values calculated from the offspring of crosses of typesAB. ab ×abab, Ab.aB ×abab,AB.ab ×AB.ab, andAb.aB ×Ab. aB.

  2. A method is given by which the best possible linkage values may be calculated from the offspring of the latter two crosses, i.e. fromF 2.

  3. If this method is employed,F 2 is almost as accurate a means of measuring linkage as are the offspring fromF 1 × double recessive; it is also slightly more sensitive as a means for the detection of linkage.