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.

Posted Date: 10/3/2012 8:48:13 AM | Location : United States

Ask an Expert

Related Discussions:- Types of parthenogenesis, Assignment Help, Ask Question on Types of parthenogenesis, Get Answer, Expert's Help, Types of parthenogenesis Discussions

Write discussion on Types of parthenogenesis
Your posts are moderated

Write your message here..

Related Questions

Endosperm with lateral haustoria, Endosperm with Lateral Haustoria In... Endosperm with Lateral Haustoria In Monochoria, in which the endosperm development is of helobial type, the haustorium is neither chalazal nor micropylar but lateral. The cha

Determine the term poliomyelitis - brian diseases, Determine the term Polio... Determine the term Poliomyelitis - Brian diseases Poliomyelitis is an acute infectious disease caused by a virus that has a special affinity for the motor neurons of the spinal

Guanotelism - excretion, Guanotelism - Excretion Normal ... Guanotelism - Excretion Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Neontology, Neontology : It is the study of recently formed organisms. Neon... Neontology : It is the study of recently formed organisms. Neontology science is the part of biology that is in contrast to paleontology. Neontology science deals with now living o

Define protein concentrates, Define Protein Concentrates, Isolates and Hydr... Define Protein Concentrates, Isolates and Hydrolysates? The first question that may come to your mind is why do we need to concentrate or isolate a protein from a product? The

The fragility of erythrocytes, The fragility of erythrocytes The fragil... The fragility of erythrocytes The fragility of erythrocytes is impaired in the absence of NADPH generation due to the deficiency of glucose-6-phosphate dehydrogenase thereby ca

Water has key participation in organic reactions, Q. Water has key particip... Q. Water has key participation in organic reactions. What are examples of two types of organic reactions in which water is respectively incorporated or liberated in the products of

Explain about the vacuum evaporators, Explain about the Vacuum Evaporators?... Explain about the Vacuum Evaporators? It is common to construct various vacuumised vessels in series that is why the product moves from one vacuum chamber to the next and thus

Define absorption, Define Absorption, Storage and Elimination of cyanocobal... Define Absorption, Storage and Elimination of cyanocobalamin? Vitamin B 12 in food is bound to proteins and is only released by the action of a high 'Concentration of hydroch

Characteristics of gametes, Characteristics of Gametes Following are s... Characteristics of Gametes Following are some general characteristics of gametes: 1. The female gametes are usually laden with food material, the yolk, while the male gamet