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 non-glycerides in edible oils, Explain Non-Glycerides in Edible Oil...

Explain Non-Glycerides in Edible Oils? You may be aware of the fact that the glyceride fraction (an ester of glycerol and fatty acids that occurs naturally as fats and fatty oi

Light - marine ecosystems, Light - Marine Ecosystems Light is a limiti...

Light - Marine Ecosystems Light is a limiting factor in the ocean as it contributes significantly to organic production and distribution of marine life. The ocean is divisible

Theory of embryology - theory of epigenesis, THEOR Y OF EPIGENESIS - ...

THEOR Y OF EPIGENESIS - It was propounded by C. F. Wolff and supported by Von Baer. According to it, the egg contains the substances which are required in the formation

Explain acute renal failure, Explain Acute Renal failure Acute Renal f...

Explain Acute Renal failure Acute Renal failure:  Renal failure associated with burns or other trauma or with sharp infection or obstruction of the urinary tract.

Respiration in adult amphibians and fishes, Q. Do amphibians have direct de...

Q. Do amphibians have direct development? In amphibians the embryonic development is indirect there is a larval stage. Q. How different are the respiration in adult amphibi

Need for microbiological analysis of environment sample, Explain Need For M...

Explain Need For Microbiological Analysis of Environment Samples? Once the food is harvested, it passes through various operating steps before reaching the consumer. These step

How to calculate the biological value of protein, How to Calculate the Biol...

How to Calculate the Biological Value of Protein? A method for determining the biological value of proteins was developed by Mitchell in 1925. It measures the quantity of dieta

Cells, What surrounds a plant cell

What surrounds a plant cell

Integral membrane protein movement and distribution, Various proteins are f...

Various proteins are free to take a move laterally in the plane of the bilayer. One experiment used to represent this included fusing cultured mouse cells with human cells under ap

Explain about the toxicity - fat soluble vitamin, Explain about the Toxicit...

Explain about the Toxicity - fat soluble Vitamin? Because vitamin A is fat-soluble and can be stored, primarily in the liver, routine  consumption of large amounts of vitamin A

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