Vitellogenesis, Biology

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.

Posted Date: 1/24/2013 6:34:15 AM | Location : United States







Related Discussions:- Vitellogenesis, Assignment Help, Ask Question on Vitellogenesis, Get Answer, Expert's Help, Vitellogenesis Discussions

Write discussion on Vitellogenesis
Your posts are moderated
Related Questions
Transferring the Patient form ICU to Ward The patient is made to ambulate in ICU before shifting to ward . vitals are stabilized. The ward nurse is explained the pa

Q. What do you mean by Bleeding Index? This factor is applicable at this stage to evaluate the health of one stage implants in which the transmucosal component allows the forma

Which of the following statements is most acceptable from an evolutionary point of view? (a) Apes and humans have evolved from a common ancestor. (b) Humans have evol

Dosage and  administration  Menactra is given as a single intramuscular injection. The need for and timing of booster doses is unknown. An unpublished study summarized in the p

How intracellular cytoplasmic calcium concentration is maintained? Intracellular cytoplasmic calcium concentration is maintained by the following mechanisms: a) Limited entr

Body temperature is homeostatic ally regulated around a set point. Given your knowledge of negative feedback and homeostatic control system, predict whether narrowing or widening o

Explain the Female Reproductive System? The female reproductive system consists of the primary sex organs, the ovaries, and the accessory organs necessary to effect fertilizati

What Physical fitness tests examine? Physical fitness tests examine the components of physical fitness such as endurance, speed, strength, flexibility and body composition. The

What are the effects of protease inhibitors?  In experimental animals, they have been found to be associated with growth inhibition and pancreatic hypertrophy. A negative feedb

Which type of genetic disease can be identified from the visual analysis of the number of chromosomes present in a karyotype? The counting and the identification of chromosomes