Male sterility in plants is induced by expression of the TA29-barnase-pA cassette in:
In molecular biology, nucleic acid structure and recombination dictates that hairpin formation, Holliday junction resolution and translation control ensure fidelity. Therefore Tapetum is correct as it matches molecular mechanisms of gene expression, supported by mechanistic studies and conserved across related systems.
Ref: Lodish et al., Molecular Cell Biology, 8th Edition, Chapter 8, RNA Processing and Translation, covers mRNA hairpins, puromycin mechanism and aminoacyl-tRNA function governing protein synthesis and translational regulation.
