Flowering genes controlling

Holton, T.A. et al., Cloning and expression of cytochrome P450 genes controlling flower colour. Nature, 366, 276, 1993. 

We note that this theory would be applicable even if LEAFYs.s. and NEEDLY did not control maleness and femaleness there simply needs to be some kind of divergence of functional role between them via neofunctionalization (cf. Lynch, 2002). Increase in the effectiveness of C-function genes controlled by LEAFY s.s. could easily lead to the loss of the relatively vulnerable NEEDLY, thereby allowing the immediate (and potentially saltational Bateman and DiMichele, 2002) formation of bisexual cones as flower precursors. The Pleiotropy Constraint model helpfully allows co-expression ofboth the male and female programmes in a single determinate meristem in contrast with the Mostly Male theory, there is no requirement for ectopic expression of either the female or the male developmental programmes. 

MOYANO, E., MART NEZ-GARCIA, J.F., MARTIN, C., Apparent redundancy in myb gene function provides gearing for the control of flavonoid biosynthesis in Antirrhium flowers, Plant Cell, 1996,8, 1519-1532. 

DE VETTEN, N, QUATTROCCfflO, F MOL, J., KOES, R., The anil locus controlling flower pigmentation in petunia encodes a novel WD-repeat protein conserved in yeast, plants, and animals, Genes Dev., 1997,11, 1422-1434. 

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