Ootidogenesis

Jump to navigation Jump to search

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[1].

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.

Template:WH Template:WS