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

Multiple interfertile tetraploid species have arisen from the ancestral tetraploid following hybridization, including C. berlandieri and C. hircinum, although the evolutionary relationships among quinoa and its diploid and tetraploid relatives remain unclear25.

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

This is probably because it is a tetraploid while the shagbark, shellbark and hybrids are diploids.

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