epigenesis /epi·gen·e·sis/ (-jen´ĕ-sis) the development of an organism from an undifferentiated cell, consisting in the successive formation and development of organs and parts that do not preexist in the fertilized egg.epigenet´ic
epigenesis
epigenesis [ep″ĭ-jen´ĕ-sis]
ep·i·gen·e·sis ( p  -jn  -ss)n. The theory that an individual is developed by successive differentiation of an unstructured egg rather than by a simple enlarging of a preformed entity. ep i·ge·netic (-j-ntk) adj. |
epigenesis
[ep′ijen′əsis]
Etymology: Gk, epi + genein, to produce
(in embryology) a theory of development in which the organism grows from a simple to more complex form through the progressive differentiation of an undifferentiated cellular unit. Compare preformation. epigenesist, n., epigenetic, adj.
epigenesis [ep″ĭ-jen´ĕ-sis]
the development of an organism from an undifferentiated cell, consisting in the successive formation and development of organs and parts that do not preexist in the zygote. adj., adj epigenet´ic.
epigenesis
the development of an organism from an undifferentiated cell, consisting in the successive formation and development of organs and parts that do not preexist in the fertilized egg.
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