Vitellogenesis, Biology

Assignment Help:

Vitellogenesis

Vitellogenesis is the stage where much of the oocyte growth occurs. The completion of second maturation division (meiosis), which may occur after ovulation, results in ripe egg or ovum. In some species such as sea urchins and frogs, the female produces hundreds or thousands of eggs at a time where as in most mammals including humans only a few eggs are produced in the entire lifetime of the individual. In this section we shall discuss oogenesis in two groups of animals,

 (1) The amphibians as an example of organisms which produce yolky eggs and

 (2) Mammals, as an example of organisms whose eggs do not contain any yolk.


Related Discussions:- Vitellogenesis

Chromosome jumping, Chromosome jumping is the technique whereby one begins...

Chromosome jumping is the technique whereby one begins with a piece of DNA from one area of a chromosome, and obtains clones from nearby areas without cloning everything in betwee

Explain the term - diffusion, Explain the term-Diffusion Diffusion occu...

Explain the term-Diffusion Diffusion occurs from the side of greater concentration to the side of lesser concentration. In aqueous humour this occurs from the plasma side in th

Define Listeriosis monocytogenes, Define Listeriosis monocytogenes L. ...

Define Listeriosis monocytogenes L. monocytogenes can grow over the temperature range of about 1 0 to 45 0 C and the pH range 4.1 to around 9.6, it maybe expected to survive

Estimate the results of tetralogy of fallot, Estimate the Results of Tetral...

Estimate the Results of Tetralogy of Fallot? In excellent centres, the mortality is reported one per cent or less. In infants and babies with low weight, higher mortality is ex

What is the kind of life cycle present in pteridophytes, Q. What is the kin...

Q. What is the kind of life cycle present in pteridophytes? Like all plants pteridophytes present diplobiontic (alternation of metagenesis or generations,) life cycle.

Methods of filter feeding, Methods of Filter Feeding More elaborate me...

Methods of Filter Feeding More elaborate methods of filter feeding are seen in tube dwelling polychaetes which use tentacles to entangle the food particles. Figure shows some

National approach to deal with the prevention of obesity, Define National A...

Define National Approach to deal with the Prevention of Obesity? A number of countries have adopted a national approach to deal with the prevention of obesity and other non-com

Pair of alleles has different allelesdominance between them, Whenever a pai...

Whenever a pair of alleles has different alleles is there dominance between them? Not in all cases of a gene includes two different alleles is the dominance complete. There are

Explain about the maillard reaction, Explain about the Maillard Reaction? ...

Explain about the Maillard Reaction? The Maillard reaction sometimes called nonenzymatic, nonoxidative browning is simply the reaction between the amino group of a protein or

Why are vaccines made of the own disease agent, Why are vaccines made of th...

Why are vaccines made of the own disease agent or of fragments of it? The goal of vaccines is to artificially persuade a specific primary immune response (and the consequent fo

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