describe development of female gametophyte
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Early in their evolution, plants acquired a life cycle that alternates between a multicellular haploid organism, the gametophyte, and a multicellular diploid organism, the sporophyte. Angiosperms have both female and male gametophytes. The female gametophyte is critical to many steps of the angiosperm reproductive process, including pollen tube guidance, fertilization, the induction of seed development upon fertilization, and maternal control of seed development after fertilization. Genetic analysis in Arabidopsis and maize has revealed mutants defective in almost all stages of female gametophyte development, and analysis of these mutants is beginning to reveal features of the female gametophyte developmental program. In addition, mutants defective in female gametophyte function have revealed regulatory genes required for the induction of endosperm development. From these studies, we are beginning to understand the regulatory networks involved in female gametophyte development and function
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Early in their evolution, plants acquired a life cycle that alternates between a multicellular haploid organism, the gametophyte, and a multicellular diploid organism, the sporophyte. Angiosperms have both female and male gametophytes. The female gametophyte is critical to many steps of the angiosperm reproductive process, including pollen tube guidance, fertilization, the induction of seed development upon fertilization, and maternal control of seed development after fertilization. Genetic analysis in Arabidopsis and maize has revealed mutants defective in almost all stages of female gametophyte development, and analysis of these mutants is beginning to reveal features of the female gametophyte developmental program. In addition, mutants defective in female gametophyte function have revealed regulatory genes required for the induction of endosperm development. From these studies, we are beginning to understand the regulatory networks involved in female gametophyte development and function
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