Oogenesis, Biology

Assignment Help:

Oogenesis

Oogenesis is the formation of ovum from oogonial cells that are formed in the ovary from primordial germ cells. And as in spermatogenesis it involves meiosis to produce haploid ovum. You have learnt in the section on spermatogenesis that the differentiation of sperm occurs after the meiotic events. In oogenesis the process of first meiotic division is very prolonged; and it is during this process that growth and differentiation of oocyte take place. In many animals most events related to oocyte differentiation occur during prophase I of first meiotic division. In animals which produce yolk-laden eggs, this phase is divided into

  • Previtellogenesis (before yolk production)
  • Vitellogenesis (yolk deposition)
  • Post Vitellogenesis (after yolk deposition)

Related Discussions:- Oogenesis

Determination of proteins and amino acid content in foods, Define Methods o...

Define Methods of Determination of Proteins and Amino Acid Content in Foods? The methods for protein quality evaluation are grouped under the following headings: I) Analytic

Transplant procedure and immunosuppression, TRANSPLAN T PROCEDURE - Op...

TRANSPLAN T PROCEDURE - Operation is done under general anaesthesia, duration 3-4 hrs. Cut is given in the lower abdomen. Donar's kidney is transplanted retroposistonicaly

What are flight adaptations present by birds, Q. What are flight adaptation...

Q. What are flight adaptations present by birds? Wings associated to a well-developed pectoral musculature, less accumulation, pneumatic bones of feces in the bowels due to the

What is class amphibia , What is Class Amphibia ? Class Amphibia take...

What is Class Amphibia ? Class Amphibia takes its name from the Greek words "amphi" and "bios." Amphi means "both sides," or "both types," and bios means "life." This name-bo

Show the signs and symptoms of implant failure, Q. Show the Signs and sympt...

Q. Show the Signs and symptoms of implant failure? Signs and symptoms of implant failure are : 1.  Horizontal mobility beyond 0.5 mm or any clinically observed vertical move

Zoonoses disease-milkers’ nodules, Milkers’ nodules Milkers’ nodules are c...

Milkers’ nodules Milkers’ nodules are caused either by cowpox virus, an orthopoxvirus or pseudocowpox virus, a parapoxvirus. These are relatively benign lesions that occur most co

Can you explain hormones, Q. What are hormones? Hormones are substances...

Q. What are hormones? Hormones are substances collected by the circulation and secreted by the endocrine glands that act to produce effects upon specific tissues and organs and

State about the drosophila and bacteriophage, Alfred Sturtevant and Seymour...

Alfred Sturtevant and Seymour Benzer's studies of recombination in both Drosophila and bacteriophage demonstrated which of the following? A. The gene is an indivisible unit and

Define prevention of iron deficiency, Define Prevention of Iron Deficiency?...

Define Prevention of Iron Deficiency? Iron deficiency anaemia accounts for approximately one-half or more of all the anaemia's seen worldwide. Iron deficiency without anaemia a

Define proline, Define Proline It is a prominent amino acid found in fi...

Define Proline It is a prominent amino acid found in fish and may contribute to sweetness. The sugars ribose, glucose and glucose-6-phosphate are flavour contributors, as is 5-

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd