Examples of polyploidization in the following topics:
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- Scientists have identified types of polyploidy that can lead to reproductive isolation of an individual in the polyploid state.
- In some cases a polyploid individual will have two or more complete sets of chromosomes from its own species in a condition called autopolyploidy.
- It has been suggested that many polyploidization events created new species, via a gain of adaptive traits, or by sexual incompatibility with their diploid counterparts.
- An example would be the recent speciation of allopolyploid Spartina — S. anglica; the polyploid plant is so successful that it is listed as an invasive species in many regions.
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- In some cases (notably among diploid organisms), the terms C-value and genome size are used interchangeably, however in polyploids the C-value may represent two or more genomes contained within the same nucleus.
- Genome size can increase by duplication, insertion, or polyploidization and the process of recombination can lead to both DNA loss or gain.
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- In some cases, a polyploid individual will have two or more complete sets of chromosomes from its own species in a condition called autopolyploidy .
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- Inside the multicellular sporangia, the diploid sporocytes, or mother cells, produce haploid spores by meiosis, where the 2n chromosome number is reduced to 1n (note that many plant sporophytes are polyploid: for example, durum wheat is tetraploid, bread wheat is hexaploid, and some ferns are 1000-ploid).