Evolutionary Implications of Mechanistic Models of TE-Mediated Hybrid Incompatibility
Figure 2
The misregulation of TEs due to a mismatch of maternal siRNA and paternal TE copies, consistent with the Martienssen and Josefsson models of endosperm failure. (a) TE load differences between parents: the maternal siRNA cannot suppress paternal TE copies due to excess of paternal TE copies. (b) TE sequence mismatch between parents: the maternal siRNA cannot suppress paternal TE copies due to differences in sequences of the TEs.