K12 Comparative Embryology: Difference between revisions
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| colspan="2"|[[File:Mark_Hill.jpg|50px]] The fly head picture is easy to explain, and you can also talk about the [http://www.nobelprize.org/nobel_prizes/medicine/laureates/1995/press.html 1995 Nobel Prize] for this discovery. | | colspan="2"|[[File:Mark_Hill.jpg|50px]] The fly head picture is easy to explain, and you can also talk about the [http://www.nobelprize.org/nobel_prizes/medicine/laureates/1995/press.html 1995 Nobel Prize] for this discovery. | ||
The Hox gene picture will be difficult for students to understand. Just understand that in all animal embryos, different Hox genes are expressed along the head to tail axis of the embryo and that this establishes an initial pattern in all embryos. | The Hox gene picture will be difficult for students to understand. Just understand that in all animal embryos, different Hox genes are expressed along the head to tail axis of the embryo and that this establishes an initial pattern in all embryos. | ||
"Hox" is the acronym for "Homeobox", a large family of similar genes that control the formation of many body structures during early embryonic development. | |||
Here is a page with University level student information on [[Developmental Signals - Homeobox|Homeobox]] | |||
homeobox | |||
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Revision as of 14:25, 5 September 2016
Embryology - 25 Apr 2024 Expand to Translate |
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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 comparative development shared with all animals.
Meiosis
Mitosis
GastrulationBody PlanBelow is an example of what happens in a fly if these patterning signals get disrupted, putting legs from the body on the head where antenna should be located.
This fly mutation identified a common patterning gene family called Hox that establishes the head to tail axes in the embryo. This complicated picture shows how different Hox genes are expressed at different embryo levels in different species (worms, flies, mouse and human).
Cite this page: Hill, M.A. (2024, April 25) Embryology K12 Comparative Embryology. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/K12_Comparative_Embryology
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