K12 Comparative Embryology
Embryology - 19 Apr 2024 Expand to Translate |
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K12 Professional Development 2016
Introduction
All human and animal embryos go through very similar stages of early development. See also Humans and Animal Embryology.
This page introduces a few of the concepts of development shared with all animals.
MeiosisIn the male and female in all animals (and plants) that reproduce sexually to form an embryo, these very first cells form by meiosis. Meiosis a reductive form of cell division that only occurs in the egg (oocyte) and sperm (spermatozoa) and allows new genetic combinations of offspring to be generated. Meiosis has 2 key components:
MitosisMitosis is the type of normal cell division that allows growth and development of all animal embryos. After the first cell has been formed by the egg (oocyte) and sperm (spermatozoa) fusing, every cell division in the embryo forms 2 genetically identical daughter cells. Mitosis has 2 key components:
PatterningDevelopment of any animal requires the differentiation of different cell types and tissues from essentially the same initial cells. The first pattern in all embryos to make the animal's head and body that has a left and right side and a front and back. The signals used to establish this patterning are shared (similar or the same) between different animals.
Cite this page: Hill, M.A. (2024, April 19) Embryology K12 Comparative Embryology. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/K12_Comparative_Embryology
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