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

What is the disease caused by dietary iodine deficiency, Q. What are few ex...

Q. What are few examples of mineral salts from the diet that act as coenzymes? Magnesium, copper and zinc are examples of biological coenzymes. Q. What is the disease cause

Describe the features common in ventricular outflow, Describe the Features ...

Describe the Features common in ventricular outflow obstruction ? An ejection systolic murmur (ESM) due turbulent flow of blood through the obstruction. Hypertrophy of the cham

Why ascending method of paper chromatography is preferred, Why Ascending Me...

Why Ascending Method of Paper Chromatography is Preferred? The ascending method is preferred because of the simplicity of the set up. In actual method the substance to be separ

Helobial type - endosperm, Helobial Type - Endosperm This type of endo...

Helobial Type - Endosperm This type of endosperm is intermediate between the nuclear and the cellular types. The division of the primary endosperm nucleus is followed by the f

How many alleles of genes that condition x-linked traits do, How many allel...

How many alleles of genes that condition X-linked traits do female and male individuals respectively present? For every correspondent gene to an X- linked trait women present a

What is diverticular disease, Q. What is Diverticular Disease? A common...

Q. What is Diverticular Disease? A common disorder of the large bowel, diverticulosis, is an early stage of the disease. It can be identified in 15% of the people over the age

10 mcq question of plants, 10 mcq question in the topic of plants of 9th st...

10 mcq question in the topic of plants of 9th standard

Mitosis, what is mitotic apparatus

what is mitotic apparatus

Agro industrial-oil seed meals as by-pass protein source, Oil Seed Meals as...

Oil Seed Meals as By-pass Protein Source The protein digestion in ruminants encompasses microbial transformation of dietary protein in the rumin. A varying portion of feed pro

Explain the term - neurochemical manipulations, Explain the term - Neuroche...

Explain the term - Neurochemical Manipulations Neurochemical and immunological methods have been used to identify groups of neurons in the central nervous system that use speci

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