Question

Function of micro and mega nucléus

Answer 1

The macronucleus is the centre of all metabolic activities of the organism. The micronucleus is a storage site for the germline genetic material of the organism. It gives rise to the macronucleus and is responsible for the genetic reorganization that occurs during conjugation (cross-fertilization).

Answer 2

The Paramecium have the fascinating property of having separate germinal and somatic lineages within a single cytoplasmic unit. These cells possess indeed two nuclei. A germinal nucleus (the micronucleus) is responsible for the transmission of genetic information via sexual processes, whereas a somatic nucleus (the macronucleus) ensures expression of this information. At each sexual generation, a new somatic nucleus is produced by programmed rearrangements of the whole genome contained in the germinal nucleus. 


The nuclei of Paramecium, the micronucleus and the macronucleus, differ in both structure and function. The diploid micronucleus, which is present in two copies in the P. tetraurelia species, represents the germ line and is completely silent in terms of transcription. This is the nucleus which undergoes meiosis and fertilization during sexual events (conjugation between competent cells or autogamy in a single cell). 

The macronucleus, which is highly polyploid (about 1000n), represents the somatic line and is the site of transcription. Both the macronucleus and the micronucleus are derived from copies of the zygotic nucleus. 



in other word or in short 



Paramecium, like other ciliates, stores its genetic information in two types of nuclei. There is usually one large (macro) nucleus and one or more smaller (micro) nuclei in each cell. The macronucleus is polyploid, containing up to 800 copies of each gene, and is transcriptionally active. The micronucleus is diploid and holds the cell's germline DNA, genes which are exchanged during sexual reproduction.

MARK BRAINLIEST..