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

Which type of ecological interaction is competition, Q. What is competition...

Q. What is competition? Which type of ecological interaction is competition? The Competition is the ecological interaction in which the individuals explore the similar ecologic

Zoology, adaptation and distribution of synaptura (flat fish)

adaptation and distribution of synaptura (flat fish)

Explain gum tragacanth, Gum Tragacanth  Gum tragacanth, the exudation o...

Gum Tragacanth  Gum tragacanth, the exudation of Astragalus species, is defined as the "dried gummy exudate" obtained from Astragalus gummifer Labillardiere. Gum tragacanth is

Explain antimicrobial susceptibility - tuberculosis, Explain antimicrobial ...

Explain antimicrobial susceptibility All isolates of M. tuberculosis  should be tested for antimicrobial susceptibility. Initial therapy for most patients with active TB should

Spermeiogenesis / spermetoleosis, SPERMEIOGENESI S / SPERMETOLEOSIS It...

SPERMEIOGENESI S / SPERMETOLEOSIS It is the gradual differentiation of a stationary rounded and undifferentiated spermatid into an active and motile sperm. The spermatids f

Respiration, essay on respiratory structures of living organisms

essay on respiratory structures of living organisms

What are the three categories of food protein, What are the three categorie...

What are the three categories in which food protein sources can be divided into Protein food sources can be separated into the following three categories: Proteins of pl

Explain about lyophilic, Explain about lyophilic If the affinity betwee...

Explain about lyophilic If the affinity between the dispersed phase and the medium is high, the dispersed phase is said to be lyophilic (solvent loving) or hydrophilic, in the

What characteristics distinguish fungi from plants, What characteristics di...

What characteristics distinguish fungi from plants? Fungi contain some unicellular forms, but plants do not; most plants are autotrophic, but all fungi are heterotrophic. Fungi

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