Errors in fertilization, Biology

Assignment Help:

ERRORS IN FERTILIZATION -

1.       Polyspermy - When more than one sperms are fused in an ovum, this condition is called polyspermy.

2.       Polygynae - During oogenesis after the meiosis polar body I and II are not seperate, in this condition one male pronuclei fused to two female pronuclei. This condition is called polygynae.

3.      Polyandry - When two male pronuclei fused with the one female pronuclei is called as polyandry, in this condition embryo is dead.

4.      Gynogenesis - When sperm contact to the ova than ova is activated but pronuclei of sperm not fused to female pronuclei.

5.      Partial fertilization - In this type of fertilization pronuclei of sperm fertilized to a blastomere.

6.    Androgenesis - During fertilization process, pronuclei of ova if inactivated, during development process pronuclei of sperm participate.


Related Discussions:- Errors in fertilization

Excretory organ and waste product, name the excretory ogran and waste produ...

name the excretory ogran and waste product formed in various types of animals

Explain the nutritional care process, Explain The nutritional care process ...

Explain The nutritional care process The nutritional care process is a systematic and  logical approach to ensure effective and  successful nutrition and intervention. The Ame

What is the ph inside the stomach, Q. What is the pH inside the stomach? Wh...

Q. What is the pH inside the stomach? Why is there a need to keep that pH level? How is it maintained? Which are the cells that produce that pH? The normal pH of the gastric ju

Valve separate the right ventricle from the pulmonary artery, Q. What is th...

Q. What is the valve that separates the right ventricle from the pulmonary artery? Why is that valve important? The pulmonary valve is important to prevent blood from the pulmo

Properties of transparency factors in corneal hydration, What are special p...

What are special properties of transparency factors in corneal hydration of cornea? The factors affecting the transparency include special properties of the corneal epitheliu

How can the menstrual cycle be described, Q. Including major events and hor...

Q. Including major events and hormonal changes how can the menstrual cycle be described? One can imagine a cycle like an analog clock at which at 0 o'clock is the beginning and

What do you understand by hiatus hernia, Q. What do you understand by Hiatu...

Q. What do you understand by Hiatus Hernia? Several long/short term complications may arise due to GERD which may in turn increase the frequency or severity of this disease. On

Explain the ecosystems, Explain the Ecosystems? The ecosystem is yet an...

Explain the Ecosystems? The ecosystem is yet another level, or ecological unit, studied by ecologists. An ecosystem encompasses all of the organisms (all the populations-the en

Phylum protozoa, what are the classfication and members af phylum protozoa

what are the classfication and members af phylum protozoa

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