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

Define the rehabilitation phase of spinal trauma disease, Define the Rehabi...

Define the Rehabilitation Phase of spinal trauma disease? Once the patient s condition stabilizes, individualized diets need to be recommended, based on the energy and nutrient

Molecular biology and technology, what are protein? What is the constituent...

what are protein? What is the constituential uni. Of protein? Briefly explain the various forms of protein?

Determine the term - test-retest reliabilities, Determine the term - Test-r...

Determine the term - Test-retest reliabilities The test manual reports reliability data. Test-retest reliabilities for the 13 main scales range from .78 to .96. The problem of

What process occurred during the formation of the platelet, Removal of a pa...

Removal of a patient's peripheral intravenous catheter resulted in brief bleeding and the loss of a small amount of blood. Which of the following processes occurred during the form

Response to wounding, Response to Wounding Wounding of tomato plants b...

Response to Wounding Wounding of tomato plants by mechanical injury or chewing by insects releases a factor that triggers accumulation of two proteinase inhibitors-throughout

Precautions for estimation of sucrose by fehling soxhlet, Explain Precautio...

Explain Precautions for Estimation of Sucrose by Fehling Soxhlet Method? 1. Maintain proper temperature of the water bath for complete hydrolysis. 2. Add distilled water to

Estimate the molar mass of protein, Estimate the molar mass of protein? ...

Estimate the molar mass of protein? An aqueous solution of the protein bovine serum albumin, containing 2:00 *10 -2 g of protein per cubic centimeter, has an osmotic pressure

Vasa recta - vertebrate kidney, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Describe the experimental approach using the tools, For many of the mammali...

For many of the mammalian Hox genes, it has been possible to determine that some of them are more similar to one of the insect HOM-C genes than to the others. Describe an experimen

Scheme of classification of phylum hemichordate, Q. Scheme of Classificatio...

Q. Scheme of Classification of phylum hemichordate? These are about 90 species of hemichordates. All are marine and live in the open sea or in muddy sediments. Hemichordata wer

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