File:22+23=45.jpg

Complete absence of on of the X sex chromosomes is the most common cause of Turner Syndrome. Union of a 22 chromosomal female egg (22 autosomal and no sex chromosome) with a 23 chromosomal sperm (22 autosomal and an X sex chromosome) creates a 45-chromosomal zygote, rather than the normal 46.

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Assessment

+ Image fulfils the student drawn image criteria. + Has some educational value as simplified diagram showing chromosomal content in Turner Syndrome.

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Cite this page: Hill, M.A. (2024, April 25) Embryology 22+23=45.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:22%2B23%3D45.jpg

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G