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Table 1 Hypothetical case of transgressive segregation of a quantitative morphological trait due complementary gene action

From: Genetic, morphological, and chemical patterns of plant hybridization

Locus Phenotypic value
Species A Species B F1 Transgressive F2 hybrids
1 +1, +1 −1, −1 +1, −1 +1, +1 −1, −1
2 +1, +1 −1, −1 +1, −1 +1, +1 −1, −1
3 −1, −1 +1, +1 +1, −1 +1, +1 −1, −1
4 −1, −1 +1, +1 +1, −1 +1, +1 −1, −1
Net phenotypic value 0 0 0 +8 −8