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

Regulation of cholesterol biosynthesis, Cholesterol can be gained either fr...

Cholesterol can be gained either from the diet or it can be synthesized de novo, mainly in the liver. Cholesterol is transported round the body in lipoprotein particles. The rate

Which kind of polarity do fat-soluble substance has, Q. Which kind of polar...

Q. Which kind of polarity do fat-soluble and water-soluble substances respectively have? Ans. Water-soluble substances are behave as polar molecules, i.e., they have e

Define the wealth care delivery, Define the Wealth Care Delivery ? The ...

Define the Wealth Care Delivery ? The challenge that exists today in many countries is to reach the whole population with adequate health case services and to ensure their util

What is prostetic group, What is Prostetic group Prostetic group :- A ...

What is Prostetic group Prostetic group :- A non-protein  part  of  the  enzyme which  remains  tightly bound to the protein part.

Lungs - respiratory organs, Lungs - Respiratory Organs In arachnid art...

Lungs - Respiratory Organs In arachnid arthropods such as scorpion and spider, respiration takes place by means of book lungs. There are four pairs of these structures in the

Consequence of over population, CONSEQUENC E OF OVER POPULATION - With...

CONSEQUENC E OF OVER POPULATION - With increase in population the available natural resources will fall short of requirements. A severe competition will ensure creating soc

Investigation of aortic regurgitation by echocardiogram, Q. Investigation o...

Q. Investigation of aortic regurgitation by Echocardiogram? Echocardiography is done to confirm the diagnosis of aortic regurgitation, evaluate the cause of AR and assess the a

When aflatoxigenic molds can occur, Q. When Aflatoxigenic molds can occur? ...

Q. When Aflatoxigenic molds can occur? Occurrence: Aflatoxigenic molds can occur in warmer parts of the world and aflatoxicosis maybe produced in a wide range of tropical and s

Define abbe condenser of microscope, Define Abbe Condenser of Microscope? ...

Define Abbe Condenser of Microscope? It is present beneath the stage, as shown in Figure. It collects and focuses a cone of light on the slide. Its position can be adjusted ver

The various types of techniques used in forensic, Discuss the various types...

Discuss the various types of techniques used in forensic biology past and present.

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