Ploidy refers to the number of chromosomes found in a cell and is subdivided into two categories: euploidy and aneuploidy. Euploidy is one complete chromosome set or exact multiples of that set. Aneuploidy includes gain or loss of chromosomes that is...

A cell is haploid (from Greek haploos = single, ploion = vessel) if it contains only one set of chromosomes, as opposed to most body cells that contain two sets of chromosomes. A haploid cell is symbolized as "n." In all cells of organisms, with the...

The diploid chromosome complement of a species, designated 2n, consists of the combined haploid chromosome sets, each designated 1n, contributed by the male and female parents at fertilization. The diploid complement of chromosomes consists of pairs of...

Ploidy is the number of homologous sets of chromosomes in a biological cell. The ploidy of cells can vary within an organism. In humans, most cells are diploid (containing one set of chromosomes from each parent), but sex cells (sperm and egg) are...

HEDRICK STUDENT AWARD REVIEW PAPER 2003 Abstract The recent discovery of the narrow genetic base of the cultivated strawberry has sparked a renewed interest in the use of wild Fragaria species in breeding programs. The two progenitor octoploid species, F. chiloensis and...

Buffalograss [Buchloe dactyloides (Nutt.) Engelm.] is the subject of breeding programs for turfgrass use because of its drought and heat tolerance, low growing habit, and low management input. Three ploidy levels are known to exist (x = n = 10), but plants at each...