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

What is the parasite that causes toxoplasmosis, What is the parasite that c...

What is the parasite that causes toxoplasmosis? How is the disease transmitted and what are its typical manifestations? Toxoplasmosis is caused by the protozoan Toxoplasma gond

Movement of body parts, MOVEMENT OF BODY PARTS - Movement of appenda...

MOVEMENT OF BODY PARTS - Movement of appendages bring about locomotion. Perapodia, setae in Annelida, jointed legs in Arthropoda, flat foot in mollusca, tube feat in sta

Explain the assessment of zn status, Explain the Assessment of Zn Status? ...

Explain the Assessment of Zn Status? Sensitive indices for assessing zinc status are unknown at present. Static indices, such as zinc concentration in plasma, blood cells and h

Explain major limiting factors of photosynthesis, Q. What are the three maj...

Q. What are the three major limiting factors of photosynthesis? The three major limiting factors of photosynthesis process are light intensity, carbon dioxide temperature and c

Vasa gene, Vasa are a maternal-effect gene whose product functions in devel...

Vasa are a maternal-effect gene whose product functions in development of the posterior end of the Drosophila embryo.  runt is a non-maternal-effect gene whose product functions in

What are the hexoses, Q. What are the hexoses? What are some examples of he...

Q. What are the hexoses? What are some examples of hexoses with vital biological functions? Hexoses are carbohydrates whole of six carbons. Galactose, fructose and Glucose are

Fundamental structure of a virus, Q. What is the fundamental structure of a...

Q. What is the fundamental structure of a virus? Viruses are constituted of genetic material RNA or DNA covered by a protein capsule also known as a capsid. Some viruses, like

Microorganisms on basis of oxygen requirement for growth, Q. Microorganisms...

Q. Microorganisms on basis of oxygen requirement for growth? On basis of oxygen requirement for growth: - Obligate Aerobes: Require oxygen for growth and multiplication e.g

Clinical features - rheumatic fever, The American Heart Association (AHA) h...

The American Heart Association (AHA) has recommended the revised Jones Criteria as a guide for ARF diagnosis. The same have been approved by WHO study group for the diagnosis of in

Is the edible part of the onion a fruit, Are fruits always the flesh part o...

Are fruits always the flesh part of the "fruits"? Is the edible part of the onion a fruit? In some so-called fruits the actual fruit is not the flesh part. For instance, the fl

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