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

Explain the uses of hydrocolloids, Explain the uses of hydrocolloids In...

Explain the uses of hydrocolloids In particular, hydrocolloids can provide water for increasing the flexibility (plasticizing) of other food components. These can also affect i

DNA, DNA TRANSLATION AND TRANSCRIPTION

DNA TRANSLATION AND TRANSCRIPTION

Define minerals, Define minerals Definition of minerals, as it applies ...

Define minerals Definition of minerals, as it applies to food and nutrition usually refers to  the elements other than carbon, hydrogen, oxygen and nitrogen that are present in

Hlstory of psychiatry, HlSTORY OF PSYCHIATRY: The earliest treatment o...

HlSTORY OF PSYCHIATRY: The earliest treatment of  mental disorders was practiced by stone age cave dwellers. For certain mental disorders,  the early Shaman or medicine man, t

What is the valve that separates the aorta from the heart, What is the valv...

What is the valve that separates the aorta from the heart? What is the importance of that valve? The valve among the left ventricle and the aorta is the aortic valve. The aorti

Explain about solubility of proteins, Precipitation/Solubility of Proteins ...

Precipitation/Solubility of Proteins Most of the functional properties are  dependent on the degree to which the proteins are soluble. The solubility behaviour provides a good

Specialized structures that help the adhesion between cells, Q. What are th...

Q. What are the specialized structures that help the adhesion between cells? The structures responsible for the union of the epithelial cells are called cell junctions. The mai

Coordination and response, Name the two hormones produced by the pancreas a...

Name the two hormones produced by the pancreas ans say in what circumstances, in what way, they adjust the glucose concentration in the blood.

Name of structures you would expect to find in the dermis, Name of the stru...

Name of the structures you would expect to find in the dermis. In the dermis you would expect to search sensory nerve endings, nerve fibres, capillaries, arterioles and venules

How you can repair ventricular aneurysm with a patch?, How you can Repair V...

How you can Repair Ventricular Aneurysm with a patch? Repair of Ventricular Aneurysm with a patch :  Originally described by Cooley, as endoaneurysmorra

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