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== Pre-Implantation Development ==
 
== Pre-Implantation Development ==
[[Image:Blastocyst_English.svg|thumb|right|300px|Blastocyst - Courtesy of Wikimedia Commons]]
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[[Image:Blastocyst.gif|thumb|right|300px|Blastocyst - Courtesy of Wikimedia Commons]]
 
* The sperm enters the the oocyte forming the ootid.
 
* The sperm enters the the oocyte forming the ootid.
 
* In the Ootid, male and female '''pronuclei''' along with the first and second '''polar bodies''' are present.
 
* In the Ootid, male and female '''pronuclei''' along with the first and second '''polar bodies''' are present.
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