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

Agro industrial-sea weeds, Sea weeds Besides lakes, rivers and ponds, ...

Sea weeds Besides lakes, rivers and ponds, India has two thousands kilometers long coastline and wide variety of aquatic plants are abundantly available which are regarded mor

Show characteristics of protozoans, Q. What are the characteristics of prot...

Q. What are the characteristics of protozoans that make them resemble animals? Protozoans are unicellular beings with some related characteristics to animal cells. In compar

Relationship of different systems in diabetes mellitus, Describe the relati...

Describe the relationship of different systems in diabetes mellitus Diabetes Mellitus has direct relationship with endocrine system, especially with endocrine part of the panc

What is the food sources of proteins, Food Sources of Proteins Food pr...

Food Sources of Proteins Food protein sources can be divided into 3 major categories: a.  Protein of Animal Origin b.  Protein of Plant Origin c.  Single cell protein

What is ventilation, What is ventilation   A.  An increase in the hydro...

What is ventilation   A.  An increase in the hydrogen ion concentration in the interstitial spaces of the  brain stem leads to an increase in the duration of the respiratory cy

Anti lipid drugs-peri operative problems, Anti Lipid Drugs :  The current ...

Anti Lipid Drugs :  The current thinking is that it is very important to keep lipid levels low. It helps in preventing atherosclerotic changes in venous grafts and the long-term p

Explain what it does to fluid balance, Caffeine and alcohol both block the ...

Caffeine and alcohol both block the secretion of ADH from the posterior pituitary gland. Explain what this does to fluid balance. Does it make sense to drink caffeine before an ath

Observation of the anatomical structures, This assignment was done, sent in...

This assignment was done, sent in marked then sent back to me to be resubmitted. Comments were grammar & structure to be reviewed so could you please proof read & make it more acad

Human brain, what cause to hypertention?

what cause to hypertention?

Define interaction of vitamin c with nicotinic acid, Define interaction of ...

Define interaction of vitamin c with Nicotinic acid? NAD, NADP and NMN act as constituents of the hydrogen transferring coenzymes in glycolysis, Kreb's cycle and in the oxidati

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