Dictionary » D » Dihaploid




A haploid cell having two copies of the set of chromosomes.


Of or pertaining to a cell or organism containing two copies of the same haploid genome.


For instance, haploids of tetraploid species are called dihaploid. A dihaploid occurs as a result of the spontaneous or induced chromosome doubling in haploid cells during embryogenesis.

Word origin: dihaploid - coined by Bender in 1963 to combine in one word the number of genome copies (diploid) and their origin (haploid).
Related forms: dihaploidy (noun), dihaploidic (adjective).
Synonym: doubled haploid.
Compare: haploidy, diploidy, monoploidy, polyploidy.
See also: ploidy, homologous chromosomes.

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The species Oryzasativa spp are in Poaceae family. This family 've a property is making dihaploid (AA)(Spartina grass is also) or some genus (A)(not common) fertilized themself with high concentration to make a new genus (AA', Aapproximately A'>97%) Dihaploid genus ...

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by mothorc
Thu Jul 28, 2005 1:39 pm
Forum: Genetics
Topic: rice genome type AA, BB...
Replies: 1
Views: 2848

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