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Developmental Selection

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The Developmental Selection module is a research simulation that allows students to investigate the possible causes of incomplete embryo development in perennial legume fruits.

Two competing hypotheses are proposed to explain patterns of seed abortion - the pollen tube competition hypothesis and the maternal resource limitation hypotheses. Students can explore these competing hypotheses by setting up experimental problems and then collecting and analyzing their data.

The Developmental Selection interface includes three sliders that the student can control to influence seed abortion rates (Seed/Ovule Ratio) and the relative influence of pollen tube competition (PTC) and maternal resource limitation (MRL).

Other interfaces emphasize data collection, data analysis and a summary of observations.