The two types of nuclei are the micronucleus and macronucleus, according to the Encyclopedia of Microbiology. The micronucleus is diploid; that is, it contains two copies of each paramecium ...

The larger macronucleus, which is responsible for programming most of the cell's activities, is derived from a copy of the micronucleus produced by a complex process that selectively fragments the ...

Each cell contains two nuclei: a micronucleus comprising only five chromosomes, and a macronucleus, which has more than 200. The micronucleus contains the DNA necessary for reproduction.

As the contents of the micronucleus are copied into the macronucleus, anything that doesn’t contain instructions for making proteins—the so-called “non-coding DNA”—is ruthlessly pruned.

The smaller nucleus (called the micronucleus) does nothing more than keep the cell's full genome safe, ... This macronucleus houses about 15 percent fewer DNA sequences than the smaller one, ...

A nucleus, fortunately, ruptures relatively rarely and can usually be rapidly repaired. A micronucleus, on the other hand, isn’t so lucky. Micronuclei (MN) form when a chromosome gets separated from ...

Study: Genetic determinants of micronucleus formation in vivo.Image Credit: Dimarion/Shutterstock.com. Background. Genomic instability and extracellular MN accumulation are hallmarks of various ...

The original macronucleus then withers away, leaving the new macronucleus and the micronucleus, both of which divide as the cell divides into identical daughter cells, each with a new set of nuclei.

Paramecium are ciliates, members of a phylum of protists that possess both germline and somatic genomes housed in functionally distinct nuclei — the micronucleus and macronucleus, respectively ...

The macronucleus controls the everyday functions of the cell, while the micronucleus deals with its complicated sex life. Mating is called conjugation, and involves swapping genes from the ...

Paramecia have two nuclei: a germinal micronucleus that is transmitted during sexual reproduction and a somatic macronucleus -- resulting from the latter -- where the cell's genes are expressed.