tetraploid

American  

[te-truh-ploid] / ˈtɛ trəˌplɔɪd /

adjective

Biology.

1. having a chromosome number that is four times the basic or haploid number.

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noun

1. a tetraploid cell or organism.

tetraploid British  

/ ˈtɛtrəˌplɔɪd /

adjective

1. having four times the haploid number of chromosomes in the nucleus

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noun

1. a tetraploid organism, nucleus, or cell

Other Word Forms

• tetraploidy noun

Etymology

Origin of tetraploid

First recorded in 1925–30; tetra- + -ploid

Example Sentences

However, sometimes the number of chromosome sets doubles from one generation to the next: one diploid organism suddenly becomes a tetraploid -- i.e. it has four sets of chromosomes.

From Science Daily • Apr. 16, 2024

Moreover, we sequenced the genomes of additional diploid and tetraploid Chenopodium species to characterize genetic diversity within the primary germplasm pool for quinoa and to understand sub-genome evolution in quinoa.

From Nature • Feb. 7, 2017

After the whole genome duplication, the mutated plant and its tetraploid descendants had two copies of its genome in the nucleus of its cells.

From Slate • Jun. 11, 2014

Simultaneously, a tetraploid organism and a new species have been created.

From Scientific American • May 19, 2013

So far as we know, all of the species have a constant number within the genus except the hickories where we have tetraploid species and diploid species.

From Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952 by Northern Nut Growers Association