A mutation that inactivates the cytochrome b/f complex would
Mechanistically, metabolic engineering and inheritance involves exogenous gene introduction and pathway extension enable trait improvement. This validates inhibit movement of electrons from PSII to PSI because it demonstrates metabolic extension and combinatorial biosynthesis, a pattern repeatedly demonstrated in genetics and biotechnology research.
Ref: Griffiths et al., Introduction to Genetic Analysis, 11th Edition, Chapter 5, discusses metabolic pathways, recombinant DNA technology, metabolic extension and Golden Rice as pathway engineering for vitamin A production.
