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 rifaximin, Explain Rifaximin Rifaximin (Xifaxan - Salix), a non...

Explain Rifaximin Rifaximin (Xifaxan - Salix), a non-absorbed oral antibiotic derived from rifampin (Rifadin, and others), has been approved by the FDA for treatment of travele

Write in 3-4 lines about the term belief, Q. Write in 3-4 lines about the t...

Q. Write in 3-4 lines about the term belief? Beliefs are learned by us when we were young. These include religious beliefs and beliefs about behaviour. Some beliefs lead to hea

Define the food pricing, Define the Food Pricing? The pricing of the fo...

Define the Food Pricing? The pricing of the food products bought by the consumer is subject to multifarious factors. Each of the factors as discussed below can affect the prici

Example of trial balance columns, Q. Example of Trial Balance columns? ...

Q. Example of Trial Balance columns? Start by extending all of Micro Train's revenue and expense account balances in the Adjusted Trial Balance columns to the Income Statement

Genetic, 1. The genes for ruby eyes (rb), tan body (t) and cut wings (ct) a...

1. The genes for ruby eyes (rb), tan body (t) and cut wings (ct) are all found on the X-chromosome of Drosophila melanogaster. All of these are recessive traits. They map in the or

Respiration, Define respiration in animals

Define respiration in animals

Explain the proteus - characteristics of bacteria, Explain the Proteus - Ch...

Explain the Proteus - Characteristics of Bacteria? It is gram negative, non-sporulating rod, which is characterized by rapid motility (peritrichous flagella) and swarming type

Fertilisation, Explain how the uterus supports the development of a baby du...

Explain how the uterus supports the development of a baby during gestation

Signify the term metacoel, Signify the term Metacoel. The last of three...

Signify the term Metacoel. The last of three coelomic spaces found in tripartate body plan characteristic of deuterostome lineage of animals. Other coelomic compartments are th

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