What are two mechanisms in plants to promote outbreeding
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Mechanisms promoting outcrossing in plants include self-incompatibility, unisexuality (dioecy), dichogamy (temporal separation of sexual expression) and herkogamy (spatial separation of sexual expression); however, these mechanisms differ in effectiveness.
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In monoecy organisms, there are various mechanisms to promote outbreeding, such as maturation of gametes at different times in imperfect flower plants and heteromorphic and homomorphic of perfect flower plants. Outbreeding can increase the genetic diversity and introduce elite alleles into the breeding population.
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