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

Describe about the term - bacterial infections, Describe about the term - B...

Describe about the term - Bacterial Infections Bacterium is a loose generic name for any microorganism (typically one celled) that has no chlorophyll and multiplies by simple d

Illustrate chloroplast structure, Q. In which chloroplast structure are chl...

Q. In which chloroplast structure are chlorophyll molecules found? Chlorophyll molecules are placed in an organized manner in order to improve the exposure to light on the thyl

Non - pharmacological management, Great importance is being given to life s...

Great importance is being given to life style modifications because of definite benefits observed in patients who follow this. Life style changes have advantages not only in the co

Describe the method of molecular photo copying, Question 1: "Plant tiss...

Question 1: "Plant tissue culture now has direct commercial applications" Explain. Describe plant tissue culture Illustrate importance of plant tissue culture Sho

Express the term ctene, Express the term ctene. This unique locomotory ...

Express the term ctene. This unique locomotory structure is found in Ctenophora and is made up of fused cilia arranged into flattened plates. Ctenes are then organized into eig

The process of evolutionary cephalization be described, Using examples of i...

Using examples of invertebrate nervous systems how can the process of evolutionary cephalization be described? Considering the instance of invertebrates it is observed that ev

Limnology, Limnology : It is the study of organisms present in rivers or fr...

Limnology : It is the study of organisms present in rivers or fresh water lakes. Limnology is also called as freshwater science. This is the study of inland waters. Limnology is of

What are universal donors & recipients concerning abo blood, What are unive...

What are universal donors and universal recipients concerning the ABO blood system? The Universals donors of the ABO blood type system are the individuals of the type O. The Ty

What is represented by the cellular secretion, Q. What is represented by th...

Q. What is represented by the cellular secretion? Cell secretion is the removal to the exterior of substances produced by the cell for instance, hormones, mucus, and sweat, so

Which processes help bring oxygen to the body cells, Which of the following...

Which of the following processes help bring oxygen to the body cells that are in a leg? A. Net flux of oxygen from red blood cells into blood plasma in the body capillaries in

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