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Developmental stage and mechanism of imprinting of the FWA locus
| Mature plant 2n |
Male microspore/gametophyte n |
Female gametophyte n |
Endosperm 3n |
Embryo 2n |
|---|---|---|---|---|
| −/− | − | − except specifically activated in polar nuclei | F ++. M − | −/− |
| Silenced by MET1 | Maternal polar nuclei copies activated by DEMETER | Female copies active, male copy silenced | Silenced by MET1 |
M, male genome; F, female genome. Expression level from each genome is indicated by+and −.
