Examples of polyploid

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Secondly, not all polyploids have a diploid relative available in nature and genetic analyses of these polyploids must be carried out in the polyploid form.
Also, because polyploidization events were considered rare, polyploids may have a single origin and, thus, high genetic uniformity is maintained across different individuals.
A chromosome bin map of 16 000 expressed sequence tag loci and distribution of genes among the three genomes of polyploid wheat.
Still, it has to be realized that in allopolyploid species and species with a polyploid origin, homeology across the genome may impede such conclusions.
In addition, polyploid forms of plants can adapt to more extreme conditions than their diploid relatives and are thus of great practical value.
There is a strong emphasis on cytogenetics throughout; whilst this is certainly important in polyploid cereals, its role in diploids is over-played.
One advantage of polyploid mapping over diploid mapping comes from the increased chance of sampling a non-homozygous parent.
This will in turn provide insight into the studies of the parentage formation and genome constitution of polyploid species.
Many new species have been produced in connection with tetraploids and higher polyploids.
Of these, 27 (82%) were diploid, 3 (9%) were mixoploid and 3 (9%) were polyploid.
Most odd-number polyploids are practically sterile because meiosis divides by 2, leaving a remainder of single chromosomes for random distribution.
The detection and estimation of linkage in polyploids using single-dose restriction fragments.
The percentage of aneuploid cells was 10.2 and 10.6% of cells were polyploid.
However, all except one of these polyploid cells arose from either multipronucleate zygotes or embryos which had been exposed to toxic culture conditions.
Construction of linkage maps in polyploids is more challenging than that in diploids due to the complex nature of multiple alleles in polyploids.
106 polyploids is as convenient as that in diploids.
Therefore, many studies on constructing linkage maps have focused on diploid relatives of polyploids, such as in potato and alfalfa.
Song et al. (1995) detected extensive changes in the nuclear genome of synthetic polyploids in each of the first five generations.

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