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

Describe the features common in ventricular outflow, Describe the Features ...

Describe the Features common in ventricular outflow obstruction ? An ejection systolic murmur (ESM) due turbulent flow of blood through the obstruction. Hypertrophy of the cham

Show the natural selection of taxonomist, Q. Show the Natural selection of ...

Q. Show the Natural selection of taxonomist? Natural selection associated with successful reproduction maintains a basic similarity of the reproductive feature of flowers, frui

What is implant success, Implant success 1) An individual, unattached i...

Implant success 1) An individual, unattached implant is immobile when tested clinically. 2) A radiograph that does not demonstrate any evidence of perimplant radiolucency.

Describe the factors of maintenance of implants, What are the special consi...

What are the special considerations required to be taken in maintenance of implants? The procedures for maintenance of patients with implants are similar to those with natural

Parasite and host during incubation period, Parasite and host during incuba...

Parasite and host during incubation period Incubation period is the second stage in the process of a disease. It is the time between the day of infection to the appearanc

Give three examples of reflex actions, Give three examples of reflex action...

Give three examples of reflex actions. Examples of reflex actions are alter in size of the pupil of the eye in response to light intensity, blinking in response to foreign par

Procedures for diagnosis - restriction enzyme analysis, R e striction...

R e striction enzyme analysis: The restriction endonuclease analysis of viral DNA fragments or DNA fingerprinting discovered in 1970s has revolutionized the study o

Cytology, who is the first person who saw the cell

who is the first person who saw the cell

Metazoa, explain hadzi''s theory with reference to metazoa

explain hadzi''s theory with reference to metazoa

Races of modern man, RACE S OF MODERN MAN Australoids Negroids ...

RACE S OF MODERN MAN Australoids Negroids Caucasoids Monogoloids American Indian Polynesian All human races have the same number of chromosomes (46) and b

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