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

Define distribution of food products – public nutrition, Define Distributio...

Define Distribution of Food Products - Public Nutrition? We learnt earlier that we have buffer stocks of food grains in our country. These stocks do help to combat acute transi

Three phases into which the hiv infection is often divided, Q. What are the...

Q. What are the three phases into which the HIV infection is often divided? The HIV infection is frequently divided into three phases the acute phase, from the infection to 1 u

Thyroid gland, THYROID GLAND - It develops from the endoderm of the ...

THYROID GLAND - It develops from the endoderm of the embryo. Th e thyroid gland is the largest endocrine gland located anterior to the thyroid cartilage of the larynx

protozoa, explain protozoa taxonom

explain protozoa taxonomy

Define national programmes targeting children and adolescent, Define Nation...

Define National Programmes Targeting Children and Adolescents? Two programmes specially target children and adolescents as a vulnerable group. These are: a) Mid Day Meal Pro

Explain normal nutrition - a base of therapeutic diet, Normal nutrition: a ...

Normal nutrition: a base of therapeutic diet Normal nutrition is the foundation upon which the  therapeutic modifications are based. The primary principle of diet nutrition the

Explain the effect of deficiency of vitamin e, Explain the Effect of Defici...

Explain the Effect of Deficiency of Vitamin E? Fortunately, vitamin E deficiency in human is extremely rare. This may probably be due to its wide occurrence. in natural foods a

What is single s2, What is Single S 2 In cyanotic TOF, S, consists enti...

What is Single S 2 In cyanotic TOF, S, consists entirely of A, as P, is attenuated by a deformed pulmonary valve when there is valvar steuosis and aorta is placed anteriorly re

Describe metabolic syndrome, Describe Metabolic Syndrome ? As discussed...

Describe Metabolic Syndrome ? As discussed, the risk factors like obesity, high blood pressure, high blood glucose or impaired glucose tolerance, and dyslipidaeinia are very im

POPULATION, WHAT ARE THE CHARACTERISTICS OF POPULATION IN ANIMAL

WHAT ARE THE CHARACTERISTICS OF POPULATION IN ANIMAL

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