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

Explain antigens, Explain Antigens ? A blood type, or group, is based ...

Explain Antigens ? A blood type, or group, is based upon the presence or absence of certain substances called antigens on the surface of the red blood cells. Antigens are subs

Explain the types of care of teeths, Explain the types of care of teeths ...

Explain the types of care of teeths a) Plastic/ Nylon  Scalers: These are available in a variety of shapes and are moderately effective in calculus removal. Can be Ultrasonic

Gills and booklungs, Give detailed structure of gills,book lungs

Give detailed structure of gills,book lungs

What bacterial cell structures are used to carry the genes, What bacterial ...

What bacterial cell structures are used to carry the genes intended for genetic engineering? The cells structures in bacteria which carry genes intended for genetic engineering

What is biotechnology, What is biotechnology? Biotechnology is the appl...

What is biotechnology? Biotechnology is the application of biological knowledge to get new techniques, materials and compounds of pharmaceutical, medical, agrarian, industrial

How dissimilar are intracellular and extracellular digestion, How dissimila...

How dissimilar are intracellular and extracellular digestion? What is the evolutionary benefit of extracellular digestion? Intracellular digestion is that in which the breaking

Candidiasis (moniliasis or thrush), C a n d i d i a s i s (monili...

C a n d i d i a s i s (moniliasis or thrush) C and i d a albicans , the causative fungus of the disease, is widespread in the environment and is usually present

How will consuming fewer than 1, How would consuming fewer than 1,200 kcalo...

How would consuming fewer than 1,200 kcalories per day impact metabolism.

Craninal nerves, Craninal nerves: Cranial nerves take their origin f...

Craninal nerves: Cranial nerves take their origin from different areas of brain  Some of them are sensory, some are motor and a few are mixed nerves. There are 12 pair

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