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

In earlier studies of such tetraploid sand rock-cress populations, the researchers identified genes associated with the plant's fertility for which novel variants had evolved in the tetraploids.

From Science Daily • Apr. 16, 2024

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

At gene scale, the genome of A. vaga is tetraploid and comprises both anciently duplicated segments and less divergent allelic regions.

From Nature • Aug. 21, 2013

In other words, the offspring of this mutant would be tetraploid.

From Scientific American • May 19, 2013

The normal number in the gamete, 7, is considered the simple or haploid number, and therefore the number 28 is called tetraploid.

From Hormones and Heredity by Cunningham, J. T.