Three eggs are sitting on a table with a leaf


During this development, a multicellular organism emerges from the egg., consisting of various organs and tissues, which is capable of independent existence. In all animals, embryonic development involves fertilization of an egg or, in case of parthenogenesis, its activation, followed by crushing stages, gastrulation, organogenesis followed by emergence from the egg membranes or birth
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نسخ
During this development
,
a multicellular organism emerges from the egg
.,
consisting of various organs and tissues
,
which is capable of independent existence
.
In all animals
,
embryonic development involves fertilization of an egg or
,
in case of parthenogenesis
,
its activation
,
followed by crushing stages
,
gastrulation
,
organogenesis followed by emergence from the egg membranes or birth
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