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

Kingdom protists, phyla of animal like protists that have free living membe...

phyla of animal like protists that have free living members

Explain zipping of the apical canal, Explain Zipping of the Apical Canal ...

Explain Zipping of the Apical Canal a. If the preparation is continued with progressively larger and stiffer file lead to : zipping perforation or tear apical foramen.

Egg - synergids, Egg - Synergids The three cells of the egg apparatus ...

Egg - Synergids The three cells of the egg apparatus are arranged in triangular fashion with the egg sharing a common wall with the two synergids and the central cell. In the

Ions , how do i find an atomic structure

how do i find an atomic structure

What is a brain freeze, What is a brain freeze? What is commonly referr...

What is a brain freeze? What is commonly referred to as 'brain freeze' happens when you ingest something that is very cold too rapidly. When the cold touches your soft palate i

Advice on follow up for cardiac patients, Advice on Follow up The pa...

Advice on Follow up The patient should adhere to the follow-up schedule strictly. Generally, one week after discharge, then one month and then 3 to 6 months interval, the

Eutrophication - effect on water bodies, Eutrophication - Effect on Water B...

Eutrophication - Effect on Water Bodies Moderate quantities of sewage decay naturally in a water body and water gets purified after some time. But the problem arises when the

Flies are expected to have vestigial wings and ebony bodies, In the fruit f...

In the fruit fly Drosophila, a rudimentary wing called "vestigial" and dark body color called "ebony" are inherited at independent loci and are recessive to their dominant wild-typ

Protozoa., brief account on classification and general characters of protoz...

brief account on classification and general characters of protozoa

Digestive system - alimentary canal, ALIMEN T A R Y CANAL Endoderma...

ALIMEN T A R Y CANAL Endodermal in origin. Long, 6-9 metres. In herbivorous more long than carnivorous.

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