Types of parthenogenesis, Biology

Assignment Help:

TYPES OF PARTHENOGENESIS -

1.      NATURAL PARTHENOGENESIS -

In many animals natural parthenogenesis is common process & is a method of reproduction.

It is of two types -

(i) Arrhenotoky or haploid parthenogenesis -

  1. In this parthenogenesis the haploid egg develops parthenogenetically to form haploid parthenote.
  2. eg. Honey bees, Ants, Gall fly, Wasp & Arachnida.
  3. In honey bees haploid egg parthenogenetically developed to form male & the fertilize diploid egg forms female.

(ii) Thelytoky or Diploid parthenogenesis -

  1. In this diploid eggs developed parthenogenetically to form diploid parthenote.
  2. Diploid generation is always female.
  3. In this meiosis not take place during gametogenesis.
  4. eg. Aphids, Daphnia, Nematods, Rotifers, Trematodes etc.

2.       ARTIFICIAL PARTHENOGENESIS -

  1. Artificial parthenogenesis can be induced by shaking, puncture, chemicals (KCl, CO , weak acid, weak base), changes in temperature & changes in osmotic pressure.
  2. Loeb studied in frog parthenogenetically ova to sexual maturity.
  3. In Lacerta Sexicola lizard eggs are diploid and develop into female. The male are absent.

1766_types of parthenogenesis.png


Related Discussions:- Types of parthenogenesis

Explain about the physiological accommodation, Explain about the Physiologi...

Explain about the Physiological Accommodation Physiological Accommodation contractile power of the ciliary muscle required to change the focussing power of the eye by ID. Meas

Define stress echocardiography with adenosine, Q. Define Stress Echocardiog...

Q. Define Stress Echocardiography with Adenosine? These have all been described. The information is that of wall motion abnormality indicating ischaemia. Ejection fraction can

Etiology of diarrhoea, Etiology   The causes of diarrhoea can be classi...

Etiology   The causes of diarrhoea can be classified as follows:  i)  Infectious causes   Viral  : Rota virus, Norwalk and allied viruses, Enterovirus, Influenza virus,

Enzyme, name of enzyme that mostly used in industrial biotechnology?

name of enzyme that mostly used in industrial biotechnology?

Apsirin determination, Indirect determination: By determining the weight...

Indirect determination: By determining the weight of the filler on the dried filter paper you can calculate the weight of aspirin in each tablet: weight of acetylsalicylic ac

Explain what is genetic engineering, Explain brifly what is Genetic Enginee...

Explain brifly what is Genetic Engineering ? Genetic Engineering : Engineering techniques have been used in agriculture and horticulture for centuries. Certain plants or ani

Define Types of plants and animal on earth - taxonomy, Define kinds of plan...

Define kinds of plants and animal on earth - Taxonomy? Taxonomic studies have major objective-the learning of the kinds of plants and animal on earth, their names, their distin

Advantage & disadvantage of using algae as source of protein, Define Advant...

Define Advantage & disadvantage of using Algae as source of protein? Advantage Produces proteins which have almost all the Essential Amino acids. Rich in tyrosine

Define risk factors for drug nutrient interaction, Define Clinical Signific...

Define Clinical Significance and Risk Factors for Drug-Nutrient interactions? We are already aware of the fact that poor nutritional status can impair drug metabolism and the d

How does the male gamete penetrate the egg cell, How does the male gamete p...

How does the male gamete penetrate the egg cell? How does the female gamete protect itself from the entrance of more gametes after the entrance of the first sperm cell? The spe

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