As in most ciliates ( with the exception of the Karyorelictea ) the macronucleus splits, during division, and the micronuclei also undergo mitosis.
22.
"Dileptus " bodies are typically narrow or cylindrical, and have a macronucleus made up of more than a hundred scattered nodules.
23.
The ciliated protozoan Tetrahymena is a useful research model for studying nuclear dimorphism; it maintains two distinct nuclear genomes, the micronucleus and the macronucleus.
24.
As a ciliate, " C . uncinata " has cilia covering its body and a dual nuclear structure, the micronucleus and macronucleus.
25.
Ciliates contain two nucleus types : a macronucleus that is primarily used to control metabolism, and a micronucleus which performs reproductive functions and generates the macronucleus.
26.
Ciliates contain two nucleus types : a macronucleus that is primarily used to control metabolism, and a micronucleus which performs reproductive functions and generates the macronucleus.
27.
During sexual conjugation, haploid micronuclear meiotic products from both parental cells fuse, leading to the creation of a new micro-and macronucleus in progeny cells.
In " Tetrahymena ", the micronucleus has 10 chromosomes ( 5 per haploid genome ), while the macronucleus has over 20, 000 chromosomes.
30.
The exception to this is the minichromosome encoding the rDNA, which is massively upregulated, existing at a copy number of approximately 10, 000 within the macronucleus.
