The phenomenon of genomic imprinting occurs in both animals ( mammals ) and plants ( flowering plants ), and consists of seemingly nierównocennej expression of imprinted genes derived from the father and mother in offspring ; alleles derived from one of the parents are muted. This article presents the Issues of imprintingiem genomowynm associated with plants . In flowering plants the embryo and endosperm are the result of double fertilization, a characteristic only for this group of plants.