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diploid Syllabification: dip·loid
Pronunciation: /ˈdipˌloid/

Definition of diploid in English:


1(Of a cell or nucleus) containing two complete sets of chromosomes, one from each parent. Compare with haploid.
Example sentences
  • An obvious question is whether the mat bias is absent in azygotic meiosis after homologous chromosomes have coexisted in diploid cells for many mitotic divisions.
  • Oocytes and sperm are haploid, with one set of chromosomes, whereas somatic cells are diploid, with two chromosomal sets.
  • However, to a low extent, viable spores can also be recovered from a very small population of homozygous diploid nuclei in an otherwise haploid plasmodium.
1.1(Of an organism or part) composed of diploid cells.
Example sentences
  • Currently, six major tetraploid races are recognized and their diploid progenitors have been identified.
  • Note that copy numbers in tetraploids were slightly less than double those in respective diploid progenitors.
  • The compactness of rice and sorghum genomes is evident compared to barley and diploid wheat genomes.


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A diploid cell, organism, or species.
Example sentences
  • We conclude that the haploids had a greater frequency of mutant phenotypes than the diploids.
  • Previous work has calculated the covariance expected under autosomal inheritance in diploids and haploids.
  • In diploids, sexual reproduction promotes both the segregation of alleles at the same locus and the recombination of alleles at different loci.


Pronunciation: /-ˌloidē/
Example sentences
  • Furthermore, it can be shown to hold for PGE with male somatic diploidy and for polyploid apomixis as well.
  • This article generalizes their approach to allow for arbitrary modes of inheritance, including diploidy, polyploidy, sex linkage, cytoplasmic inheritance, and genomic imprinting.
  • Recessive deleterious mutations are a major cause for the phenomenon of inbreeding depression, and diploidy may have evolved to mask the effects of recessive deleterious mutations.


Late 19th century: from Greek diplous 'double' + -oid.

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