Conjugation – protozoan, Biology

Conjugation – Protozoan

Conjugation is characteristic of ciliates. The details vary from species to species. The general features can be observed in Paramecium sps. which has one macronucleus and one micronucleus. Two ciliates ready for conjugation partially unite. The body surface and pellicle undergo considerable changes. The macronucleus disintegrates and the micronucleus divides twice to give rise to four haploid pronuclei. Three of these disintegrate and the fourth forms a stationary and a migratory pronucleu.

1976_Conjugation – Protozoan.png

Figure:  conjugation  in Paramecium caudatum

The latter moves into the other conjugant. The two organisms now separate and the pronuclei unite to form zygote. after several post conjugation divisions the macronucleus and micronucleus are formed restoring the normal nuclear complement.

Posted Date: 1/12/2013 6:21:56 AM | Location : United States

Related Discussions:- Conjugation – protozoan, Assignment Help, Ask Question on Conjugation – protozoan, Get Answer, Expert's Help, Conjugation – protozoan Discussions

Write discussion on Conjugation – protozoan
Your posts are moderated
Related Questions
How can "basic" neuroscience research help to find cures for neurological disorders? A better understanding of the brain at each level - molecules, cells and neural systems -is

Anabolism and Catabolism Cellular metabolism  has two aspects 1.      Anabolism  :  This aspect includes metabolic  process  by which  complex  cellular  compounds  are

Metestrus - Estrous cycle This occurs shortly after ovulation and is intermediate between estrus and diestrus. The period lasts for 10 to 14 hours and mating is usually not perm

What are the methods of foams? There are two basic methods in  the formation of foams i.e. a) whipping and b) condensation.

Extraoral Examination It includes examining the following basic structures which are related to oral cavity. TMJ: Rule out any tenderness, crepitus, clicking or snapping

Define Root-End Resection Apicoectomy a. Examine the root surface before cutting for: cracks, anatomical variations, and quality of orthograde obturation. b. Cut the root en

Describe the properties of gum ghatti Important property of gums referred to as 'viscosity' and the effets of pH. Gum ghatti does not form true aqueous solutions but form visco

What is the importance of mitosis for the embryonic development? Every embryo grows from a single cell that suffers mitosis and operates other cells that also divide themselves

What is Cancer? Besides AIDS, Cancer is another deadly human disease of our times about which people are panicky all over the world. It is estimated that one in every three per

What are the Materials required for Radiographic 1. Alginate impression material. 2. Silicone separating spray/ petroleum jelly 3. Autopolymerizing PMMA (Clear)