In the case of quantitative inheritance (q.v.), the number of segregating pairs of polygenes (n) can be estimated from the variances computed for the F1 and F2 populations. If these are symbolized s 2F1 and s 2F2, respectively, and the means for the high and low P1 strains are Xh and X1, respectively, then
n = (Xh − X1) 8(s2F2 − s2F1)
See Chronology, 1968, Wright; quantitative inheritance.
Subjects: Genetics and Genomics.