Conjugation – protozoan, Biology

Assignment Help:

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.


Related Discussions:- Conjugation – protozoan

Biochemical changes associated with senescence, Biochemical Changes Associa...

Biochemical Changes Associated with Senescence When senescence begins many physiological and biochemical changes take place. For example, one of the important changes observed

Explain non-glycerides in edible oils, Explain Non-Glycerides in Edible Oil...

Explain Non-Glycerides in Edible Oils? You may be aware of the fact that the glyceride fraction (an ester of glycerol and fatty acids that occurs naturally as fats and fatty oi

Define the dietary recommendations for epilepsy, Define the Dietary Recomme...

Define the Dietary Recommendations for epilepsy? A 3: 1 ketogenic diet is recommended. The time taken for reversing the usual ratio of 1:3 to 3: 1 is about 4 days. How will we

Indications for surgery of mitral regurgitation, Q. Indications for Surgery...

Q. Indications for Surgery of mitral regurgitation? Surgery is indicated in all symptomatic patients (class II and above) with severe mitral regurgitation and normal or decreas

Express the three functional classifications of joints, In general compare ...

In general compare and contrast the three functional classifications of joints according to movement.

Types of joints, 1.      FIBROU S OR IMMOVABLE JOINTS - Occur between ...

1.      FIBROU S OR IMMOVABLE JOINTS - Occur between the bones of cranium & in the tooth suckets commonly in the form of sutures. 2 .      CARTILAGINOUR OR SLIGHTLY MOVAB

Can you briefly explain about parasitism, Q. Can you briefly explain about ...

Q. Can you briefly explain about parasitism? The Parasitism is an inharmonious interspecific ecological interaction in which individuals of a species (the parasites) explore or

Why it is important to study about soil, Why does one need to study about s...

Why does one need to study about soil and what is  its importance? You would be aware that, from the dawn of agriculture, cultivators were attracted to fertile soils of river

Define role in growth and cellular differentiation, Define Role in growth a...

Define Role in growth and cellular Differentiation? The growth and differentiation of epithelial cells throughout the body are especially affected by vitamin A deficiency.  In

Rna processing , In the prokaryotes,  RNA transcribed  from pr...

In the prokaryotes,  RNA transcribed  from protein-coding  genes or messenger  RNA, mRNA,  need  little  or  no  changes  prior  to  translation.  In reality, several mRNA   molecu

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