#egg cell

• From the egg / From the very beginning — A Latin phrase derived from Horace's writings, meaning literally 'from the egg'. In embryology and developmental toxicology, it refers to analyzing a biological process, cellular mechanism, or the action of a teratogenic agent (malformation-inducing toxin) traced right from the egg-cell (zygote) stage or from the moment of fertilization to fully map fetal development disruptions.
• Agamospermy — A form of apomixis in higher plants (spermatophytes) within which seeds form directly, without the fusion of male and female gametes. Structurally, the embryo originates from a diploid cell of the ovule (such as the nucellus or integument) or from an unfertilized egg cell, resulting in viable seeds that contain offspring genetically identical to the mother plant.