There are at least 2 SAT chromosomes in each diploid nucleus.

After the spores' development, they first receive a diploid nucleus, and the meiosis takes place in the spore.

After fertilization the diploid nucleus migrates and fuses with an auxiliary cell.

Actual fusion to form diploid nuclei is called karyogamy, and may not occur until sporangia are formed.

Once a diploid nucleus has formed by fusion of two haploid nuclei from different parents, the parental genes can potentially recombine.

Also, in the vegetative state they have diploid nuclei, whereas fungi have haploid nuclei.

Their chromosomes can then combine and become part of a single diploid nucleus in the resulting embryo, containing a full set of chromosomes.

The diploid nuclei of blastospores are able to undergo meiosis, including recombination, to form haploid basidiospores that can then be dispersed.

The compatible nuclei of the dikaryon merge forming a diploid nucleus that then undergoes meiosis and ultimately internal ascospore formation.

DNA flow cytometry showed a significantly higher rato of tetraploid to diploid nuclei in pancreatic tissue after fundectomy than after sham operation.

Occasionally monokaryons of some taxa can form morphologically fully formed basidiomes and anatomically correct basidia and ballistic basidiospores in the absence of dikaryon formation, diploid nuclei, and meiosis.

There was a significant increase in the ratio of tetraploid to diploid nuclei in pancreatic tissue in both fundectomised and PBD operated animals, when compared with the sham operated controls (Table I).

In the simplest terms, the technique used to produce Dolly the sheep - somatic-cell nuclear transplantation cloning - involves removing the nucleus of an egg and replacing it with the diploid nucleus of a somatic cell.

Occasionally, nondisjunction of chromosomes occurs during division of a diploid nucleus, so that one of the daughter nuclei has one chromosome too many (2n+1) and the other has one chromosome too few (2n-1).

The finding of a more pronounced trophic response and more advanced morphological changes after PBD than after fundectomy was paralleled by a significant increase in the ratio of tetraploid to diploid nuclei in pancreatic tissue.

Fusion of the unlike nuclei in the cell of the heterokaryon results in formation of a diploid nucleus (karyogamy), which is believed to be unstable and can produce segregants by recombination involving mitotic crossing-over and haploidization.

A plasmodium is an amoeboid, multinucleate and naked mass of protoplasm having many diploid nuclei and is the result of many nuclear divisions without cytokinesis (coenocyte) and it usually refers to the feeding stage of macroscopic slime molds (i.e. myxomycetes).

The mechanism is largely unknown, and it seems to be a relatively rare event, but once a diploid nucleus has been formed it can be very stable and divide to form further diploid nuclei, along with the normal haploid nuclei.