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HIGHER COMPLEXITY FROM SIMPLE BASE. "The protein products of these genes function in combination as dimers that may further interact with one another to form higher-order protein complexes. In evolutionary terms, many aspects of what is now termed the ABCE model are deeply conserved across the angiosperms, most notably the stamen and carpel identity pathways." https://lnkd.in/dVXk7jP View in LinkedIn

LARGELY CHARACTERIZED. "All of the originally characterized members of these gene classes have now been mapped and sequenced, and all but one are representatives of the type II MADS-box family of transcription factors, the exception being the A-class gene APETALA2." https://lnkd.in/dVXk7jP View in LinkedIn

"THE ABCE GENETIC PROGRAM is a homeotic program, meaning that elimination or overexpression of gene function results in transformations in organ identity. For instance, loss of B gene function causes transformation of the petals into sepals and stamens into carpels, while overexpression of the B-class genes turns the sepals into petals and carpels into stamens." https://lnkd.in/dVXk7jP View in LinkedIn

E CLASS FLORAL GENES. "A fourth class of organ identity genes, the E class, was recently identified on the basis of their genetic sequence similarity rather than primary mutant phenotypes. The E-class loci act broadly across the floral meristem to facilitate the function of the other three classes." https://lnkd.in/dVXk7jP View in LinkedIn

MODULAR DISTRIBUTED GENES. "The generation of the predicted transformations by ectopic expression of the Brassica gene in transgenic tobacco indicates that gene functions are interchangable between phylogenetically distant species." https://lnkd.in/dGN8Y2C View in LinkedIn

MEIOSIS INNOVATION (4) "Homolog synapsis and the persistence of sister-chromatid cohesion through meiosis I into meiosis II." http://cshperspectives.cshlp.org/content/6/3/a016154.full View in LinkedIn

MEIOSIS INNOVATION (3) "Crossovers that occur between homologs and not between sister chromatids." http://cshperspectives.cshlp.org/content/6/3/a016154.full View in LinkedIn

MEIOSIS INNOVATION (2) "DNA replication stimulated at meiosis I and inhibited at meiosis II." http://cshperspectives.cshlp.org/content/6/3/a016154.full View in LinkedIn

SELF RECOGNITION. "The invention of meiosis puts pressure on the development of mechanisms wherein haploid cells first recognize other haploid cells with the same chromosome complement, and then fuse with them selectively." https://lnkd.in/ebVhXPf View in LinkedIn

MEIOSIS INNOVATION (1) "Mechanisms to promote breaks that stimulate meiotic recombination frequencies to higher levels than mitotic recombination frequencies." https://lnkd.in/ebVhXPf View in LinkedIn