hyperhaploidy

English

Etymology

From hyper- +‎ haploidy.

Noun

hyperhaploidy (usually uncountable, plural hyperhaploidies)

1. The state of having more than the haploid complement of chromosomes.
   • 1992, MC Sapp, PA Martin-DeLeon, “Sperm age, sex ratio, and hyperhaploidy frequency in mice”, in Cytogenetics and Cell Genetics, volume 61, number 1, →DOI, →PMID, pages 61–66:

     The frequency of sperm-derived hyperhaploidy did not differ significantly between the in vivo (3.4%) and in vitro (5.9%) populations, but did between unaged (2.5%) and aged (6.8%) sperm (chi c2 = 5.74, P less than 0.01). All hyperhaploid zygotes had a complement of n + 1 chromosomes, except the 14-d in vitro group, where complements of n + 2 and n + 3 chromosomes were seen.

   • 2000, Bernardini L, Gianaroli L, Fortini D, Conte N, Magli C, Cavani S, Gaggero G, Tindiglia C, Ragni N, Venturini PL, “Frequency of hyper-, hypohaploidy and diploidy in ejaculate, epididymal and testicular germ cells of infertile patients”, in Human Reproduction, volume 15, number 10, →DOI, →PMID, pages 2165–2172:

     Additional work is required to confirm the real frequency of hyperhaploidy in the heterogeneous population of germ cells retrieved at testicular level.