diploid

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Related to diploids: monoploid, diploidy, haploid, Haploid Cell

diploid

Biology (of cells or organisms) having pairs of homologous chromosomes so that twice the haploid number is present

Diploid

 

an organism whose cells have a double (diploid; 2n) set of chromosomes, representing a single (haploid; n) set of paired homologous chromosomes. For example, man has 23 pairs of chromosomes (n = 23’,2n = 46), and an onion has eight pairs of chromosomes (n = 8; 2n = 16). The transition from the diploid state (diplophase) to the haploid (haplo-phase) is accomplished by the first meiotic division, as a result of which the sex cells, or gametes, are formed. When the gametes fuse, the diploid number of chromosomes is restored.

diploid

[′di‚plȯid]
(crystallography)
A crystal form in the isometric system having 24 similar quadrilateral faces arranged in pairs.
(genetics)
Having two complete chromosome pairs in a nucleus (2N).
References in periodicals archive ?
Meiotic maturation and progeny of oocytes from triploid Japanese pearl oysters (Pinctada fucata martensiO fertilized with spermatozoa from diploids.
All materials above had 64 spores per sporangium, suggesting that these are sexual diploids.
In other oyster species, triploids grow faster than diploids as a result of their partial sterility, their greater heterozygosity, their different energy allocations for growth and gametogenesis (Allen & Downing 1986, Hand & Nell 1999, Hawkins et al.
The diploids species revealed a variation in the size of the megaspore from 538 [+ or -] 23 [micro]m [I.
Tetrasomic genetic analyses differ from those of diploids in two
v], t, P) of the diploid number of chromosomes were calculated using the well-known formulas.
At the final sampling before relocation to grow-out bags, triploid oysters were significantly larger than diploids (P < 0.
A complementary method for production of tetraploid Crassostrea gigas using crosses between diploids and tetraploids with cytochalasin b treatments.
They have crossed the orange-flesh diploids into the tetraploid population and, beginning in January, will be intercrossing these tetraploid-diploid hybrids.
DO YOU know your hybrids from your perennials, your diploids or tetraploids, or what about timothy or clover?
Guayule is not only normally a tetraploid (although diploids, polyhaploids, triploids and octaploids all spontaneously occur), but it is also a facultative apomictic producing a mixture of seed types depending upon environmental conditions (ref.