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 1st type of hypersensitivity, It is IgE mediated hypersensitivity. ...

It is IgE mediated hypersensitivity. Typical manifestations contain asthma, food allergies, eczema, hay fever etc.

What is the formation of atherosclerosis plaques, Which of the following le...

Which of the following leads to the formation of atherosclerosis plaques? -uptake of oxidized LDL particles by macrophase -non specific interactions between LDL particles

Reproduction, what is the difference between anisogamy and oogamy?

what is the difference between anisogamy and oogamy?

Ethylene - plant growth substances, Ethylene - Plant Growth Substances ...

Ethylene - Plant Growth Substances This hydrocarbon C 2 H 2 is a gas and is unbelievably a small and simple molecule to be accepted as a hormone. Ethylene is not produced by

Explain about celiac disease, Q. Explain about Celiac Disease? Gluten-s...

Q. Explain about Celiac Disease? Gluten-sensitive enteropathy or, as it is more commonly called, celiac disease, is an autoimmune inflammatory disease of the small intestine. I

What is pre-requisites of counselling, Q. What is Pre-requisites of counsel...

Q. What is Pre-requisites of counselling? Pre-requisites of counselling are: 1. Facilities for counselling to be available for the patient near home or working place. 2.

Can you explain about ventriculography, Q. Can you explain about Ventriculo...

Q. Can you explain about Ventriculography? Cardiac ventriculography is a diagnostic test, i.e., used to define the anatomy and function of the ventricles (left and right) and r

Explain chronic infections fever, Explain Chronic Infections Fever Chr...

Explain Chronic Infections Fever Chronic  Infections Fever: These are generally of longer and sustained duration. The patients have a past history of repeated episodes or con

Nucleolus, NUCLEOLUS Discovered by Fontana and name given by Bowm...

NUCLEOLUS Discovered by Fontana and name given by Bowman. It is naked structure that is attached to chromatin at specific point called nucleolar organiser region or

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