aneuploid, a. Biol.
(ˈænjuːplɔɪd)
[a. G. (G. Täckholm 1922, in Acta Horti Berg. VII. 234), f. an- 10 + euploid a.]
Not euploid. Hence as n. So ˈaneuˌploidy [G. aneuploidie (Täckholm)], the condition of being aneuploid.
| 1931 S. H. Yarnell in Genetics XVI. 455 (title) A study of certain polyploid and aneuploid forms in Fragaria. Ibid. 464 The chromosome number falls within the polyploid series and..its appearance is that of an aneuploid type. 1932 C. D. Darlington Rec. Advances in Cytology 494 Aneuploid, having an uneven multiple of the basic number of chromosomes through purely numerical aberration—therefore an unbalanced polyploid. 1934 Webster Aneuploidy. 1937 Nature 28 Aug. 368/2 Three aneuploid species [of the grass Poa] have chromosome numbers suggestive of a 9n origin. 1939 Ibid. 14 Oct. 649/1 The various peculiar arrangements seen in meiosis..in all sorts of species hybrids,..aneuploids, and auto- and allo-polyploids. 1946 Ibid. 12 Oct. 520/1 Reduced fertility in autotetraploids depends primarily on irregular chromosome distribution in meiosis, leading to the formation of aneuploid micro- and macrospores and consequently to pollen abortion. 1956 Ibid. 25 Feb. 376/2 Males with average litter sizes of nine or more were not examined cytologically. This may result in the loss of small translocations which do not cause lethal aneuploidy of the zygote. |