Embryo and Endosperm have very different genetic requirements for their correct development

Embryo: - follows normal Mendelien genetics, - does not require the genomic contribution of both parental genomes (eg. Haploidy, apomixis). Endosperm: -requires unique parental contribution, -deviation from 2 Maternal:1 Paternal (2M:1P) genomic ratio has dramatic effects on endosperm development.