Ootidogenesis

WikiDoc Resources for Ootidogenesis
Articles
Most recent articles on Ootidogenesis Most cited articles on Ootidogenesis Review articles on Ootidogenesis Articles on Ootidogenesis in N Eng J Med, Lancet, BMJ
Media
Powerpoint slides on Ootidogenesis Images of Ootidogenesis Photos of Ootidogenesis Podcasts & MP3s on Ootidogenesis Videos on Ootidogenesis
Evidence Based Medicine
Cochrane Collaboration on Ootidogenesis Bandolier on Ootidogenesis TRIP on Ootidogenesis
Clinical Trials
Ongoing Trials on Ootidogenesis at Clinical Trials.gov Trial results on Ootidogenesis Clinical Trials on Ootidogenesis at Google
Guidelines / Policies / Govt
US National Guidelines Clearinghouse on Ootidogenesis NICE Guidance on Ootidogenesis NHS PRODIGY Guidance FDA on Ootidogenesis CDC on Ootidogenesis
Books
Books on Ootidogenesis
News
Ootidogenesis in the news Be alerted to news on Ootidogenesis News trends on Ootidogenesis
Commentary
Blogs on Ootidogenesis
Definitions
Definitions of Ootidogenesis
Patient Resources / Community
Patient resources on Ootidogenesis Discussion groups on Ootidogenesis Patient Handouts on Ootidogenesis Directions to Hospitals Treating Ootidogenesis Risk calculators and risk factors for Ootidogenesis
Healthcare Provider Resources
Symptoms of Ootidogenesis Causes & Risk Factors for Ootidogenesis Diagnostic studies for Ootidogenesis Treatment of Ootidogenesis
Continuing Medical Education (CME)
CME Programs on Ootidogenesis
International
Ootidogenesis en Espanol Ootidogenesis en Francais
Business
Ootidogenesis in the Marketplace Patents on Ootidogenesis
Experimental / Informatics
List of terms related to Ootidogenesis

The succeeding ootidogenesis is the step in which the primary oocyte turns into an ootid. It is achieved by meiosis. The primary oocyte is even defined from its role to undergo meiosis.

However, although this process begins at prenatal age, it stops at prophase I. In late fetal life, all oocytes, still primary oocytes, have taken this halt in development, called dictyate. First after menarche they continue to develop, although only a few does so every menstrual cycle.

Meiosis I

Meiosis I of ootidogenesis starts at embryonic age, but halts in diplotene of prophase I until puberty. For those primary oocytes continuing to develop in each menstrual cycle, however, synapsis occurs and tetrads form, enabling and crossing over. As a result of meiosis I, the primary oocyte becomes the secondary oocyte and the first polar body.

Meiosis II

Immediately after meiosis I, the haploid secondary oocyte initiates meiosis II. However, this, too is halted in metaphase II. However, this only lasts until fertilization, if such occurs. When meiosis II is completed, an ootid and another polar body is created.