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

Explain reproduction rates variation in bacterial gene, Antibiotic resistan...

Antibiotic resistance is the result of natural selection mutations, the only source of new genetic information available for bacteria. Rapid reproduction rates variation in bacteri

Explain the use of enzyme assay, Explain the use of Enzyme assay Enzym...

Explain the use of Enzyme assay Enzyme assay is also used for research into such processes as the browning of plant products which poses problems during value addition. The br

Gene targeting in somatic cells, Gene targeting in somatic cells: Since t...

Gene targeting in somatic cells: Since the pioneering work with sheep at Roslin cloning by nuclear transfer has now been exemplified in a number of other livestock species includ

Explain about sex chromosomes, What is the other name given to sex chromos...

What is the other name given to sex chromosomes? Sex chromosomes are also known as allosomes (the other chromosomes that are not sex chromosomes are known as autosomes).

Explain selective and differential culture media, Explain Selective and Dif...

Explain Selective and Differential Culture Media? These are used for isolation of specific organisms. These are designed to isolate a group of closely related organisms and dif

Darwins theory of natural selection, Darwins theory of natural selection is...

Darwins theory of natural selection is considered a paradigm shift--a theory that has wide-ranging effects. Describe some of the advantages that this theory offered scientists once

How many chromosomes in a mouse cell, Mice (Mus musculus) have 40 chromosom...

Mice (Mus musculus) have 40 chromosomes per diploid cell (2n=40). How many double- stranded DNA molecules, and how many chromosomes are there in a mouse cell that is in the G2 stag

What is meant by vaso-dilation, a) What is meant by 'vaso-dilation'? ...

a) What is meant by 'vaso-dilation'? b) What are the effects of vaso-dilation in the skin?   (a) Vaso-dilation is an enhance in diameter of small arterioles and

Female reproductive system - vagina, V AGIN A - Median, elastic, musc...

V AGIN A - Median, elastic, muscular tube 7.5 cm long. Open into vestibule by vaginal orffice. The lining forms vaginal rugae. Space between vaginal wall & cervix is forn

What ions must a plant obtain from the soil, What ions must a plant obtain ...

What ions must a plant obtain from the soil in order to make (a) ATP, (b) chlorophyll?   (a) To create ATP (adenosine triphosphate) a plant requires a supply of phosphate io

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