Imprinting--a Green Variation

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Science  23 Jan 2004:
Vol. 303, Issue 5657, pp. 483-485
DOI: 10.1126/science.1094375

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Imprinting is a process by which the paternal allele of a gene is silenced and gene expression occurs only from the maternal allele. Although much is known about imprinting during mammalian development, imprinting during plant development is less well understood. In a Perspective, Berger discusses new work ( Kinoshita et al.) that identifies the mechanism for imprinting of the FWA gene in the endosperm of the model plant Arabidopsis.