Parthenogenesis- asexual reproduction, Biology

Assignment Help:

Parthenogenesis- Asexual Reproduction

In this type of reproduction, development of a new individual takes place from an egg or a spermatozoon without the participation of a germ cell from the opposite sex. In animals only the maternal cell give rise to a parthenogenetic individual. Certain algae however, give rise to individual from paternal germ cell, therefore, parthenogenesis is considered an asexual reproductive mechanism. Natural Parthenogenesis is known to occur in rotifers, some nematodes, crustaceans, insects and several species of fish, amphibians and desert lizards.

In many parthenogenetic invertebrates there is a cyclical alternation of asexual with bisexual reproduction. Parthenogenesis may be seasonal and related to temperature or food supply, or it may appear at irregular intervals. In the honeybees and some wasps unfertilised eggs develop into haploid males and fertilised eggs give rise to diploid females.


Related Discussions:- Parthenogenesis- asexual reproduction

Water pollutants - water pollution, Water Pollutants - Water Pollution ...

Water Pollutants - Water Pollution Water pollution can occur on account of any one or more of the following agents: 1. Biological: Pathogens such as virus, bacteria,

Explain the alanine cycle, The Alanine  cycle Follow the alanine link ...

The Alanine  cycle Follow the alanine link in the alanine cycle. The process goes as under: 1)  Pyruvate formed from glycolysis in  the muscle  is converted to  alanine by t

How do the golgi apparatus act, Q. How do the Golgi apparatus act and the r...

Q. How do the Golgi apparatus act and the rough endoplasmic reticulum in the production and releasing of proteins? The rough endoplasmic reticulum has in its outer membrane man

Determine teh term - magnesium, Determine teh term - Magnesium  Magnes...

Determine teh term - Magnesium  Magnesium helps in translocation of carbohydrates and regulates the uptake of other nutrients, presumably by helping in the formation of phosph

Cardiac output - circulation, Cardiac Output - Circulation The cardiac...

Cardiac Output - Circulation The cardiac output can be determined in a number of ways. The most common method is the Fick's principle. A. Fick a German physiologist in 1870 de

Acute glomerulonephritis - disorder of glomerulus, Acute Glomerulonephritis...

Acute Glomerulonephritis   If you review the anatomy of urinary system you will recall that nephron is the working unit of kidney and its number  exists  in millions. Within  t

What is conventional breeding, What is Conventional breeding Conventio...

What is Conventional breeding Conventional breeding is a process in which genes for pesticidal traits are introduced into a plant by natural methods, such as cross-pollination

Explain dna replication, Q. As a result of the DNA replication two DNA mole...

Q. As a result of the DNA replication two DNA molecules come into existence. Why is it not correct to assert that the two "new" DNA molecules are created? What is the name given to

Compute the diffusion coefficient of a protein, Calculate the diffusion coe...

Calculate the diffusion coefficient of a protein bovine serum albumin at 23 degree Celsius?

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