Polyploids—organisms that have multiple sets of chromosomes—are common in certain
plant and animal taxa, and can be surprisingly stable. The evidence that has emerged from …

Polyploidization, the addition of a complete set of chromosomes to the genome, represents
one of the most dramatic mutations known to occur. Nevertheless, polyploidy is well …

Production of haploid plants that inherit chromosomes from only one parent can greatly
accelerate plant breeding,,. Haploids generated from a heterozygous individual and …

Accumulating data indicate that hatchery fish have lower fitness in natural environments
than wild fish. This fitness decline can occur very quickly, sometimes following only one or …

Plant speciation and diversification strongly rely on structural changes in the nuclear
genome, both at the whole ploidy and individual chromosome level. Phylogenetic …

Genome duplication (or polyploidization) has occurred throughout plant evolutionary history
and is thought to have driven the adaptive radiation of plants. We found that the cytotype of …

Epistatic interactions between genes are a major factor in evolution. Hybrid necrosis is an
example of a deleterious phenotype caused by epistatic interactions that is observed in …

During the past decade there has been a tremendous resurgence of interest in polyploidy
that has in large part been stimulated by the development of increasingly powerful genetic …

A change in chromosome number that is not the exact multiple of the haploid karyotype is
known as aneuploidy. This condition interferes with growth and development of an organism …

Wide crosses result in postzygotic elimination of one parental chromosome set, but the
mechanisms that result in such differential fate are poorly understood. Here, we show that …