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An embryo is the initial stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell.
Embrión. Para otros usos de este término, véase Embrión (desambiguación). Un embrión es la etapa inicial del desarrollo de un organismo multicelular. En los organismos que se reproducen sexualmente, el desarrollo embrionario es la parte del ciclo vital que comienza justo después de la fecundación del óvulo femenino por el ...
10 de may. de 2024 · Learn about the embryo, the early stage of animal development from fertilization to differentiation. Explore the history of embryology, the study of embryo formation and development, from Aristotle to modern times.
13 de ago. de 2023 · Biology definition: An embryo is the stage of early development after fertilization up to the phase of initial organogenesis. It may also pertain to the multicellular organism itself that undergoes extensive and rapid growth and cell differentiation during the early stage of development.
This page shows some key events of human development during the embryonic period of the first eight weeks (weeks 1 - 8) following fertilization. This period is also considered the organogenic period, when most organs within the embryo have begun to form. There are links to more detailed descriptions which can be viewed in a week by week format ...
Learn how a single cell becomes a complex organism in eight weeks of development after fertilization. Explore the stages of cleavage, blastulation, gastrulation, and germ layer formation with diagrams and examples.
18 de ago. de 2023 · A team of researchers suggests that embryo models, which are lab-grown structures with the potential to develop into fetuses, should be considered as embryos. They argue that this would reflect the current scientific advances and the ethical dilemmas of embryo research.
